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ALSA-2023:7877 — Low: openssl security update

Affected: AlmaLinux:8: openssl, AlmaLinux:8: openssl-devel, AlmaLinux:8: openssl-libs, AlmaLinux:8: openssl-perl

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

* openssl: Excessive time spent checking DH keys and parameters (CVE-2023-3446) * OpenSSL: Excessive time spent checking DH q parameter value (CVE-2023-3817) * openssl: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow (CVE-2023-5678)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

bdu:2023-04960

Withdrawn: BELL-CVE-2023-3817 — CVE-2023-3817 does not affect BellSoft software

Withdrawn by the publisher.

certfr-2023-avi-0605 — Une vulnérabilité a été découverte dans OpenSSL. Elle permet à un attaquant de provoquer un déni de service à distance.

certfr-2023-avi-0605

CLEANSTART-2026-GH88733 — Security fix for CVE-2023-3817 applied in: openssl 3.1.2-r0

Affected: CleanStart: openssl

Security vulnerability affects the openssl package. This issue is resolved in later releases. See references for vulnerability details.

EUVD-2026-237197

fkie_cve-2023-3817

Issue summary: Checking excessively long DH keys or parameters may be very slow.

Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.

The function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p.

An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.

The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check().

Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option.

The OpenSSL SSL/TLS implementation is not affected by this issue.

The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

GHSA-c945-cqj5-wfv6

Issue summary: Checking excessively long DH keys or parameters may be very slow.

An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.

Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option.

The OpenSSL SSL/TLS implementation is not affected by this issue.

The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

gsd-2023-3817

ICSA-23-320-13 — Siemens SIMATIC MV500

The deprecated compatibility function svcunix_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its path argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution. The deprecated compatibility function clnt_create in the sunrpc module of the GNU C Library (aka glibc) through 2.34 copies its hostname argument on the stack without validating its length, which may result in a buffer overflow, potentially resulting in a denial of service or (if an application is not built with a stack protector enabled) arbitrary code execution. handle_ipDefaultTTL in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.8 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker (who has write access) to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service. handle_ipv6IpForwarding in agent/mibgroup/ip-mib/ip_scalars.c in Net-SNMP 5.4.3 through 5.9.3 has a NULL Pointer Exception bug that can be used by a remote attacker to cause the instance to crash via a crafted UDP packet, resulting in Denial of Service. Issue summary: The AES-SIV cipher implementation contains a bug that causes it to ignore empty associated data entries which are unauthenticated as a consequence. Impact summary: Applications that use the AES-SIV algorithm and want to authen…

msrc_CVE-2023-3817 — Excessive time spent checking DH q parameter value

msrc_CVE-2023-3817

OESA-2023-1481 — openssl security update

Affected: openEuler:20.03-LTS-SP1: openssl, openEuler:20.03-LTS-SP3: openssl, openEuler:22.03-LTS: openssl, openEuler:22.03-LTS-SP1: openssl, openEuler:22.03-LTS-SP2: openssl

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. Security Fix(es): Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option. The OpenSSL SSL/TLS implementation is not affec…

openSUSE-SU-2024:13090-1 — libopenssl-1_1-devel-1.1.1v-1.1 on GA media

libopenssl-1_1-devel-1.1.1v-1.1 on GA media

RHSA-2023:5931 — Red Hat Security Advisory: Satellite 6.13.5 Async Security Update

openssl: c_rehash script allows command injection openssl: the c_rehash script allows command injection foreman: OS command injection via ct_command and fcct_command GitPython: improper user input validation leads into a RCE ruby-git: code injection vulnerability ruby-git: code injection vulnerability Satellite/Foreman: Arbitrary code execution through yaml global parameters OpenSSL: Excessive time spent checking DH q parameter value python-django: Potential bypass of validation when uploading multiple files using one form field python-django: Potential regular expression denial of service vulnerability in EmailValidator/URLValidator golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487) GitPython: Insecure non-multi options in clone and clone_from is not blocked HTTP/2: Multiple HTTP/2 enabled web servers are vulnerable to a DDoS attack (Rapid Reset Attack)

SUSE-SU-2023:3239-1 — Security update for openssl-1_1

Security update for openssl-1_1

UBUNTU-CVE-2023-3817

Affected: Ubuntu:Pro:16.04:LTS: openssl, Ubuntu:Pro:16.04:LTS: edk2, Ubuntu:Pro:FIPS:16.04:LTS: openssl, Ubuntu:Pro:18.04:LTS: openssl, Ubuntu:Pro:18.04:LTS: openssl1.0, Ubuntu:Pro:18.04:LTS: edk2, Ubuntu:Pro:FIPS-updates:18.04:LTS: openssl, Ubuntu:Pro:FIPS:18.04:LTS: openssl, Ubuntu:20.04:LTS: openssl, Ubuntu:20.04:LTS: edk2 and 8 more

Issue summary: Checking excessively long DH keys or parameters may be very slow. Impact summary: Applications that use the functions DH_check(), DH_check_ex() or EVP_PKEY_param_check() to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service. The function DH_check() performs various checks on DH parameters. After fixing CVE-2023-3446 it was discovered that a large q parameter value can also trigger an overly long computation during some of these checks. A correct q value, if present, cannot be larger than the modulus p parameter, thus it is unnecessary to perform these checks if q is larger than p. An application that calls DH_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function DH_check() is itself called by a number of other OpenSSL functions. An application calling any of those other functions may similarly be affected. The other functions affected by this are DH_check_ex() and EVP_PKEY_param_check(). Also vulnerable are the OpenSSL dhparam and pkeyparam command line applications when using the "-check" option. The OpenSSL SSL/TLS implementation is not affected by this issue. The OpenSSL 3.0 and 3.1 FIPS providers are not affected by this issue.

VDE-2024-073 — Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware

Gvariant offset table entry size is not checked in is_normal() G_variant_byteswap() can take a long time with some non-normal inputs Gvariant deserialisation does not match spec for non-normal data Glibc: dos due to memory leak in getaddrinfo.c Glibc: buffer overflow in ld.so leading to privilege escalation Gnutls: incomplete fix for cve-2023-5981 Gnutls: rejects certificate chain with distributed trust Denial-of-Service in gRPC Information leak in gRPC Denial-of-Service in gRPC Denial of Service in gRPC Core Libssh: proxycommand/proxyjump features allow injection of malicious code through hostname Arbitrary Memory Disclosure through CPU Side-Channel Attacks (Retbleed) Incorrect cipher key & IV length processing POLY1305 MAC implementation corrupts XMM registers on Windows Excessive time spent checking DH q parameter value SQLite SQLite3 make alltest sqlite3session.c sessionReadRecord heap-based overflow NULL Pointer Dereference in vim/vim Heap-based Buffer Overflow in vim/vim Use After Free in vim/vim Heap-based Buffer Overflow in vim/vim Integer Overflow or Wraparound in vim/vim Use After Free in vim/vim Untrusted Search Path in vim/vim Out-of-bounds Write in vim/vim Use After Free in vim/vim Heap-based Buffer Overflow in vim/vim Use After Free in vim/vim Heap-based Buffer Overflow in vim/vim Use-After-Free in win_close() in vim overflow in shift_line in vim Vim has heap-use-after-free at /src/charset.c:1770:12 in skipwhite Integer Overflow in :history command in Vim

WID-SEC-W-2023-1926 — OpenSSL: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in OpenSSL ausnutzen, um einen Denial of Service Angriff durchzuführen.