CVE-2021-3569 — Classic Buffer Overflow in Project Libtpms

CWE-120 — Classic Buffer OverflowCWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer6 documents6 sources
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 85.49%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Libtpms Project LibtpmsRedhat Enterprise Linux
Timeline
PublishedJun 3
Latest updateMay 24

Description

A stack corruption bug was found in libtpms in versions before 0.7.2 and before 0.8.0 while decrypting data using RSA. This flaw could result in a SIGBUS (bad memory access) and termination of swtpm. The highest threat from this vulnerability is to system availability.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages3 packages

▶NVDlibtpms_project/libtpms0.7.3 — 0.8.0+1
▶Debianlibtpms_project/libtpms< 0.8.2-1+2
▶CVEListV5libtpms_project/libtpmslibtpms 0.7.2, libtpms 0.8.0

Also affects: Enterprise Linux 8.0

Patches

Patch: bugzilla.redhat.com ↗Patch: bugzilla.redhat.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-ppc8-jm88-74j3: A stack corruption bug was found in libtpms in versions before 0↗2022-05-24
▶
CVEList
CVE-2021-3569: A stack corruption bug was found in libtpms in versions before 0↗2021-06-03
▶
OSV
CVE-2021-3569: A stack corruption bug was found in libtpms in versions before 0↗2021-06-03
▶

📋Vendor Advisories

2
Debian
CVE-2021-3569: libtpms - A stack corruption bug was found in libtpms in versions before 0.7.2 and before ...↗2021
▶
Red Hat
libtpms: stack corruption bug in RSA decryption↗2020-05-23
▶
CVE-2021-3569 — Classic Buffer Overflow | cvebase