    golang.org/x/crypto 0.27.0 (golang)
pkg:golang/golang.org/x/crypto@0.27.0
 Improper Authorization
| Affected range | <0.31.0 | | Fixed version | 0.31.0 | | CVSS Score | 9.1 | | CVSS Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N | | EPSS Score | 0.045% | | EPSS Percentile | 17th percentile |
Description
Applications and libraries which misuse the ServerConfig.PublicKeyCallback callback may be susceptible to an authorization bypass.
The documentation for ServerConfig.PublicKeyCallback says that "A call to this function does not guarantee that the key offered is in fact used to authenticate." Specifically, the SSH protocol allows clients to inquire about whether a public key is acceptable before proving control of the corresponding private key. PublicKeyCallback may be called with multiple keys, and the order in which the keys were provided cannot be used to infer which key the client successfully authenticated with, if any. Some applications, which store the key(s) passed to PublicKeyCallback (or derived information) and make security relevant determinations based on it once the connection is established, may make incorrect assumptions.
For example, an attacker may send public keys A and B, and then authenticate with A. PublicKeyCallback would be called only twice, first with A and then with B. A vulnerable application may then make authorization decisions based on key B for which the attacker does not actually control the private key.
Since this API is widely misused, as a partial mitigation golang.org/x/crypto@v0.31.0 enforces the property that, when successfully authenticating via public key, the last key passed to ServerConfig.PublicKeyCallback will be the key used to authenticate the connection. PublicKeyCallback will now be called multiple times with the same key, if necessary. Note that the client may still not control the last key passed to PublicKeyCallback if the connection is then authenticated with a different method, such as PasswordCallback, KeyboardInteractiveCallback, or NoClientAuth.
Users should be using the Extensions field of the Permissions return value from the various authentication callbacks to record data associated with the authentication attempt instead of referencing external state. Once the connection is established the state corresponding to the successful authentication attempt can be retrieved via the ServerConn.Permissions field. Note that some third-party libraries misuse the Permissions type by sharing it across authentication attempts; users of third-party libraries should refer to the relevant projects for guidance.
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  glibc 2.36-9+deb12u9 (deb)
pkg:deb/debian/glibc@2.36-9%2Bdeb12u9?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.099% | | EPSS Percentile | 42nd percentile |
Description
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\1\1)*' in grep, a different issue than CVE-2018-20796. NOTE: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.352% | | EPSS Percentile | 72nd percentile |
Description
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may guess the heap addresses of pthread_created thread. The component is: glibc. NOTE: the vendor's position is "ASLR bypass itself is not a vulnerability.
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 2.333% | | EPSS Percentile | 89th percentile |
Description
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass ASLR using cache of thread stack and heap. The component is: glibc. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.929% | | EPSS Percentile | 83rd percentile |
Description
GNU Libc current is affected by: Re-mapping current loaded library with malicious ELF file. The impact is: In worst case attacker may evaluate privileges. The component is: libld. The attack vector is: Attacker sends 2 ELF files to victim and asks to run ldd on it. ldd execute code. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.594% | | EPSS Percentile | 78th percentile |
Description
GNU Libc current is affected by: Mitigation bypass. The impact is: Attacker may bypass stack guard protection. The component is: nptl. The attack vector is: Exploit stack buffer overflow vulnerability and use this bypass vulnerability to bypass stack guard. NOTE: Upstream comments indicate "this is being treated as a non-security bug and no real threat.
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.295% | | EPSS Percentile | 69th percentile |
Description
In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(\227|)(\1\1|t1|\\2537)+' in grep.
| Affected range | >=2.36-9+deb12u9 | | Fixed version | Not Fixed | | EPSS Score | 0.884% | | EPSS Percentile | 82nd percentile |
Description
The glob implementation in the GNU C Library (aka glibc or libc6) allows remote authenticated users to cause a denial of service (CPU and memory consumption) via crafted glob expressions that do not match any pathnames, as demonstrated by glob expressions in STAT commands to an FTP daemon, a different vulnerability than CVE-2010-2632.
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 openldap 2.5.13+dfsg-5 (deb)
pkg:deb/debian/openldap@2.5.13%2Bdfsg-5?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=2.5.13+dfsg-5 | | Fixed version | Not Fixed | | EPSS Score | 0.160% | | EPSS Percentile | 53rd percentile |
Description
libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.
| Affected range | >=2.5.13+dfsg-5 | | Fixed version | Not Fixed | | EPSS Score | 0.492% | | EPSS Percentile | 76th percentile |
Description
contrib/slapd-modules/nops/nops.c in OpenLDAP through 2.4.45, when both the nops module and the memberof overlay are enabled, attempts to free a buffer that was allocated on the stack, which allows remote attackers to cause a denial of service (slapd crash) via a member MODDN operation.
| Affected range | >=2.5.13+dfsg-5 | | Fixed version | Not Fixed | | EPSS Score | 0.051% | | EPSS Percentile | 22nd percentile |
Description
slapd in OpenLDAP 2.4.45 and earlier creates a PID file after dropping privileges to a non-root account, which might allow local users to kill arbitrary processes by leveraging access to this non-root account for PID file modification before a root script executes a "kill cat /pathname" command, as demonstrated by openldap-initscript.
| Affected range | >=2.5.13+dfsg-5 | | Fixed version | Not Fixed | | EPSS Score | 0.299% | | EPSS Percentile | 69th percentile |
Description
The nss_parse_ciphers function in libraries/libldap/tls_m.c in OpenLDAP does not properly parse OpenSSL-style multi-keyword mode cipher strings, which might cause a weaker than intended cipher to be used and allow remote attackers to have unspecified impact via unknown vectors.
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systemd 252.31-1~deb12u1 (deb)
pkg:deb/debian/systemd@252.31-1~deb12u1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=252.31-1~deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.141% | | EPSS Percentile | 50th percentile |
Description
An issue was discovered in systemd 253. An attacker can modify the contents of past events in a sealed log file and then adjust the file such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."
| Affected range | >=252.31-1~deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.113% | | EPSS Percentile | 45th percentile |
Description
An issue was discovered in systemd 253. An attacker can truncate a sealed log file and then resume log sealing such that checking the integrity shows no error, despite modifications. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."
| Affected range | >=252.31-1~deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.090% | | EPSS Percentile | 40th percentile |
Description
An issue was discovered in systemd 253. An attacker can modify a sealed log file such that, in some views, not all existing and sealed log messages are displayed. NOTE: the vendor reportedly sent "a reply denying that any of the finding was a security vulnerability."
| Affected range | >=252.31-1~deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.042% | | EPSS Percentile | 5th percentile |
Description
systemd, when updating file permissions, allows local users to change the permissions and SELinux security contexts for arbitrary files via a symlink attack on unspecified files.
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 krb5 1.20.1-2+deb12u2 (deb)
pkg:deb/debian/krb5@1.20.1-2%2Bdeb12u2?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=1.20.1-2+deb12u2 | | Fixed version | Not Fixed | | EPSS Score | 0.043% | | EPSS Percentile | 11th percentile |
Description
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/lib/gssapi/krb5/k5sealv3.c.
| Affected range | >=1.20.1-2+deb12u2 | | Fixed version | Not Fixed | | EPSS Score | 0.043% | | EPSS Percentile | 11th percentile |
Description
Kerberos 5 (aka krb5) 1.21.2 contains a memory leak in /krb5/src/lib/rpc/pmap_rmt.c.
| Affected range | >=1.20.1-2+deb12u2 | | Fixed version | Not Fixed | | EPSS Score | 0.087% | | EPSS Percentile | 39th percentile |
Description
An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.
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 perl 5.36.0-7+deb12u1 (deb)
pkg:deb/debian/perl@5.36.0-7%2Bdeb12u1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=5.36.0-7+deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.286% | | EPSS Percentile | 68th percentile |
Description
HTTP::Tiny before 0.083, a Perl core module since 5.13.9 and available standalone on CPAN, has an insecure default TLS configuration where users must opt in to verify certificates.
| Affected range | >=5.36.0-7+deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.158% | | EPSS Percentile | 53rd percentile |
Description
_is_safe in the File::Temp module for Perl does not properly handle symlinks.
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gcc-12 12.2.0-14 (deb)
pkg:deb/debian/gcc-12@12.2.0-14?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=12.2.0-14 | | Fixed version | Not Fixed | | EPSS Score | 0.064% | | EPSS Percentile | 30th percentile |
Description
DISPUTEDA failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your application without this being detected. This stack-protector failure only applies to C99-style dynamically-sized local variables or those created using alloca(). The stack-protector operates as intended for statically-sized local variables. The default behavior when the stack-protector detects an overflow is to terminate your application, resulting in controlled loss of availability. An attacker who can exploit a buffer overflow without triggering the stack-protector might be able to change program flow control to cause an uncontrolled loss of availability or to go further and affect confidentiality or integrity. NOTE: The GCC project argues that this is a missed hardening bug and not a vulnerability by itself.
| Affected range | >=12.2.0-14 | | Fixed version | Not Fixed | | EPSS Score | 0.101% | | EPSS Percentile | 43rd percentile |
Description
libiberty/rust-demangle.c in GNU GCC 11.2 allows stack consumption in demangle_const, as demonstrated by nm-new.
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 tar 1.34+dfsg-1.2+deb12u1 (deb)
pkg:deb/debian/tar@1.34%2Bdfsg-1.2%2Bdeb12u1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=1.34+dfsg-1.2+deb12u1 | | Fixed version | Not Fixed | | EPSS Score | 0.691% | | EPSS Percentile | 80th percentile |
Description
Tar 1.15.1 does not properly warn the user when extracting setuid or setgid files, which may allow local users or remote attackers to gain privileges.
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coreutils 9.1-1 (deb)
pkg:deb/debian/coreutils@9.1-1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=9.1-1 | | Fixed version | Not Fixed | | EPSS Score | 0.042% | | EPSS Percentile | 5th percentile |
Description
In GNU Coreutils through 8.29, chown-core.c in chown and chgrp does not prevent replacement of a plain file with a symlink during use of the POSIX "-R -L" options, which allows local users to modify the ownership of arbitrary files by leveraging a race condition.
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openssl 3.0.15-1~deb12u1 (deb)
pkg:deb/debian/openssl@3.0.15-1~deb12u1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=3.0.11-1~deb12u2 | | Fixed version | Not Fixed | | EPSS Score | 0.066% | | EPSS Percentile | 31st percentile |
Description
OpenSSL 0.9.8i on the Gaisler Research LEON3 SoC on the Xilinx Virtex-II Pro FPGA uses a Fixed Width Exponentiation (FWE) algorithm for certain signature calculations, and does not verify the signature before providing it to a caller, which makes it easier for physically proximate attackers to determine the private key via a modified supply voltage for the microprocessor, related to a "fault-based attack."
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gnutls28 3.7.9-2+deb12u3 (deb)
pkg:deb/debian/gnutls28@3.7.9-2%2Bdeb12u3?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=3.7.9-2+deb12u3 | | Fixed version | Not Fixed | | EPSS Score | 1.433% | | EPSS Percentile | 86th percentile |
Description
The SSL protocol, as used in certain configurations in Microsoft Windows and Microsoft Internet Explorer, Mozilla Firefox, Google Chrome, Opera, and other products, encrypts data by using CBC mode with chained initialization vectors, which allows man-in-the-middle attackers to obtain plaintext HTTP headers via a blockwise chosen-boundary attack (BCBA) on an HTTPS session, in conjunction with JavaScript code that uses (1) the HTML5 WebSocket API, (2) the Java URLConnection API, or (3) the Silverlight WebClient API, aka a "BEAST" attack.
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util-linux 2.38.1-5+deb12u2 (deb)
pkg:deb/debian/util-linux@2.38.1-5%2Bdeb12u2?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=2.38.1-5+deb12u2 | | Fixed version | Not Fixed | | EPSS Score | 0.047% | | EPSS Percentile | 19th percentile |
Description
A flaw was found in the util-linux chfn and chsh utilities when compiled with Readline support. The Readline library uses an "INPUTRC" environment variable to get a path to the library config file. When the library cannot parse the specified file, it prints an error message containing data from the file. This flaw allows an unprivileged user to read root-owned files, potentially leading to privilege escalation. This flaw affects util-linux versions prior to 2.37.4.
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libgcrypt20 1.10.1-3 (deb)
pkg:deb/debian/libgcrypt20@1.10.1-3?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=1.10.1-3 | | Fixed version | Not Fixed | | EPSS Score | 0.329% | | EPSS Percentile | 71st percentile |
Description
cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.
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gnupg2 2.2.40-1.1 (deb)
pkg:deb/debian/gnupg2@2.2.40-1.1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=2.2.40-1.1 | | Fixed version | Not Fixed | | EPSS Score | 0.046% | | EPSS Percentile | 19th percentile |
Description
GnuPG can be made to spin on a relatively small input by (for example) crafting a public key with thousands of signatures attached, compressed down to just a few KB.
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apt 2.6.1 (deb)
pkg:deb/debian/apt@2.6.1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=2.6.1 | | Fixed version | Not Fixed | | EPSS Score | 0.307% | | EPSS Percentile | 70th percentile |
Description
It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.
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curl 7.88.1-10+deb12u8 (deb)
pkg:deb/debian/curl@7.88.1-10%2Bdeb12u8?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=7.88.1-10+deb12u8 | | Fixed version | Not Fixed | | EPSS Score | 0.044% | | EPSS Percentile | 15th percentile |
Description
libcurl skips the certificate verification for a QUIC connection under certain conditions, when built to use wolfSSL. If told to use an unknown/bad cipher or curve, the error path accidentally skips the verification and returns OK, thus ignoring any certificate problems.
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shadow 1:4.13+dfsg1-1 (deb)
pkg:deb/debian/shadow@1:4.13%2Bdfsg1-1?os_distro=bookworm&os_name=debian&os_version=12
| Affected range | >=1:4.13+dfsg1-1 | | Fixed version | Not Fixed | | EPSS Score | 0.172% | | EPSS Percentile | 55th percentile |
Description
initscripts in rPath Linux 1 sets insecure permissions for the /var/log/btmp file, which allows local users to obtain sensitive information regarding authentication attempts. NOTE: because sshd detects the insecure permissions and does not log certain events, this also prevents sshd from logging failed authentication attempts by remote attackers.
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