CVE-2021-3345
Libgcrypt Heap-Based Buffer Overflow
Description
_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.
INFO
Published Date :
Jan. 29, 2021, 3:15 p.m.
Last Modified :
Nov. 7, 2023, 3:37 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2021-3345 has a 9 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-3345
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3345.
| URL | Resource |
|---|---|
| https://bugs.gentoo.org/show_bug.cgi?id=767814 | Issue Tracking Vendor Advisory |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08 | |
| https://gnupg.org | Vendor Advisory |
| https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html | Mailing List Vendor Advisory |
| https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html | Mailing List Patch Vendor Advisory |
| https://www.oracle.com//security-alerts/cpujul2021.html | Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
Actual working exploit for CVE-2021-3345
Makefile C
None
None
None
None
None
POC exploit of CVE-2021-3345, a vulnerability in libgcrypt version 1.9.0
exploit exploits exploit-development poc cve cve-2021-3345 libgcrypt vulnerability
Makefile C
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3345 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3345 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08 [No types assigned] Removed Reference MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08 -
Modified Analysis by [email protected]
Apr. 26, 2022
Action Type Old Value New Value Changed Reference Type https://www.oracle.com//security-alerts/cpujul2021.html No Types Assigned https://www.oracle.com//security-alerts/cpujul2021.html Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jul. 20, 2021
Action Type Old Value New Value Added Reference https://www.oracle.com//security-alerts/cpujul2021.html [No Types Assigned] -
Initial Analysis by [email protected]
Feb. 04, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://bugs.gentoo.org/show_bug.cgi?id=767814 No Types Assigned https://bugs.gentoo.org/show_bug.cgi?id=767814 Issue Tracking, Vendor Advisory Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08 No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=512c0c75276949f13b6373b5c04f7065af750b08 Mailing List, Patch, Third Party Advisory Changed Reference Type https://gnupg.org No Types Assigned https://gnupg.org Vendor Advisory Changed Reference Type https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html No Types Assigned https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html Mailing List, Vendor Advisory Changed Reference Type https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html No Types Assigned https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html Mailing List, Patch, Vendor Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:a:gnupg:libgcrypt:1.9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 03, 2021
Action Type Old Value New Value Changed Description _gcry_md_block_write in cipher/hash-common.c in Libgcrypt before 1.9.1 has a heap-based buffer overflow when the digest final function sets a large count value. _gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later. -
CVE Modified by [email protected]
Jan. 29, 2021
Action Type Old Value New Value Added Reference https://bugs.gentoo.org/show_bug.cgi?id=767814 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3345 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3345
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.05%
score
0.55711
percentile