CVE-2021-20232
published 2021-03-12CVE-2021-20232: A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential…
PriorityP347critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
3.44%
87.7th percentile
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | gnutls28 | < gnutls28 3.7.1-1 (bookworm) | gnutls28 3.7.1-1 (bookworm) |
| fedoraproject | fedora | — | — |
| gnu | gnutls | — | — |
| gnu | gnutls | >= 3.6.3 < 3.7.1 | 3.7.1 |
| msrc | cbl2_gnutls_3.6.14-5_on_cbl_mariner_2.0 | — | — |
| paloalto | pan-os | — | — |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
osv9.8CRITICAL
vendor_debian9.8CRITICAL
vendor_msrc9.8CRITICAL
vendor_redhat9.8CRITICAL
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GHSA
GHSA-p947-gfm7-f4g7: A flaw was found in gnutls
ghsa_unreviewed·2022-05-24
CVE-2021-20232 [CRITICAL] CWE-416 GHSA-p947-gfm7-f4g7: A flaw was found in gnutls
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
OSV
CVE-2021-20232: A flaw was found in gnutls
osv·2021-03-12·CVSS 9.8
CVE-2021-20232 [CRITICAL] CVE-2021-20232: A flaw was found in gnutls
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
Palo Alto
PAN-SA-2024-0004 Informational Bulletin: OSS CVEs fixed in PAN-OS
vendor_paloalto·2024-04-10·CVSS 9.8
CVE-2015-5739 [CRITICAL] PAN-SA-2024-0004 Informational Bulletin: OSS CVEs fixed in PAN-OS
PAN-SA-2024-0004 Informational Bulletin: OSS CVEs fixed in PAN-OS
The Palo Alto Networks Product Security Assurance team has evaluated the following open source software (OSS) CVEs as they relate to PAN-OS. While it was not determined that these CVEs have any significant impact on PAN-OS, they have been fixed out of an abundance of caution. CVE Summary CVE-2015-5739 This CVE is fixed in PAN-OS 11.0.4, and all later PAN-OS versions. CVE-2016-10228 This CVE is fixed in PAN-OS 11.1.3, and all later PAN-OS versions. CVE-2017-8923 This CVE is fixed in PAN-OS 10.2.8, 11.0.3, and all later PAN-OS versions. CVE-2017-9120 This CVE is fixed in PAN-OS 10.2.8, 11.0.3, and all later PAN-OS versions. CVE-2018-25009 This CVE is fixed in PAN-OS 10.2.8, 11.0.4, 11.1.3, and all later PAN-OS versions. CVE-2
CISA ICS
Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
cisa_ics·2023-12-14
Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
ICS Advisory
##
Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
Release DateDecember 14, 2023
Alert CodeICSA-23-348-10
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1
- Vulnerabilities: Improper Restriction of XML External Entity Reference, Time-of-check Time-of-use (TOCTOU) Race Condition, Command Injection, Miss
Ubuntu
GnuTLS vulnerabilities
vendor_ubuntu·2021-08-02
CVE-2021-20232 GnuTLS vulnerabilities
Title: GnuTLS vulnerabilities
Summary: Several security issues were fixed in GnuTLS.
It was discovered that GnuTLS incorrectly handled sending certain
extensions when being used as a client. A remote attacker could use this
issue to cause GnuTLS to crash, resulting in a denial of service, or
possibly execute arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c
vendor_redhat·2021-03-12·CVSS 9.8
CVE-2021-20232 [CRITICAL] CWE-416 gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c
gnutls: Use after free in client_send_params in lib/ext/pre_shared_key.c
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and denial of service.
Statement: As mentioned in the upstream advisory and GnuTLS issue 1151 (see External References) this flaw is not easily exploitable and it only happens intermittently (denial of service is not always practical). For this reason, this flaw has been rated as having a security impact of Moderate.
Package: gnutls (Red Hat Enterprise Linux 6) - Not affected
Package: gnutls (Red Hat Enterprise Linux 7) -
Microsoft
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
vendor_msrc·2021-03-09·CVSS 9.8
CVE-2021-20232 [CRITICAL] CWE-416 A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mari
Debian
CVE-2021-20232: gnutls28 - A flaw was found in gnutls. A use after free issue in client_send_params in lib/...
vendor_debian·2021·CVSS 9.8
CVE-2021-20232 [CRITICAL] CVE-2021-20232: gnutls28 - A flaw was found in gnutls. A use after free issue in client_send_params in lib/...
A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.
Scope: local
bookworm: resolved (fixed in 3.7.1-1)
bullseye: resolved (fixed in 3.7.1-1)
forky: resolved (fixed in 3.7.1-1)
sid: resolved (fixed in 3.7.1-1)
trixie: resolved (fixed in 3.7.1-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.redhat.com/show_bug.cgi?id=1922275https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20%40%3Cissues.spark.apache.org%3Ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/https://security.netapp.com/advisory/ntap-20210416-0005/https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10https://bugzilla.redhat.com/show_bug.cgi?id=1922275https://lists.apache.org/thread.html/r50661d6f0082709aad9a584431b59ec364f9974b63b07e0800230168%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r5d4001031e7790d8c6396c499522b4ed2aab782da87b1a14184793bb%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r5f88bed447742fcc5c47bf1c7be965ef450131914a6e1f85feba2779%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r6ac143ba6dd98bd4bf6bf010d46e56e254056459721ba18822d611f7%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/r9cbc69e57276413788e90a6ee16c7c034ea4258d31935b70db2bd158%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rcd70a4c88a47a75fd2d5f3ffb7cee8c2a18c713320bd90fdcb57495f%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rf5e1256d870193def4a82ad89ab95e63943a313b5ff0d81aa87e4532%40%3Cissues.spark.apache.org%3Ehttps://lists.apache.org/thread.html/rfd5273d72d244178441e6904a2f2b41a3268f569e8092ea0b3b2bb20%40%3Cissues.spark.apache.org%3Ehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OSLAE6PP33A7VYRYMYMUVB3U6B26GZER/https://security.netapp.com/advisory/ntap-20210416-0005/https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10
2021-03-12
Published