CVE-2020-29562 — Reachable Assertion in Glibc

CWE-617 — Reachable AssertionCWE-20 — Improper Input Validation8 documents7 sources
Severity
4.8MEDIUMNVD
OSV5.9
EPSS
0.1%
top 83.87%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
GNU GlibcNetapp E-series Santricity OS ControllerFedoraproject Fedora
Timeline
PublishedDec 4
Latest updateMay 24

Description

The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:HExploitability: 1.2 | Impact: 3.6

Affected Packages4 packages

▶Debiangnu/glibc< 2.31-7+3
▶Ubuntugnu/glibc< 2.27-3ubuntu1.5+1
▶NVDgnu/glibc2.30 — 2.32

Also affects: Fedora 32

Patches

Patch: sourceware.org ↗Patch: sourceware.org ↗

🔴Vulnerability Details

4
GHSA
GHSA-9xm7-qxg2-g5p4: The iconv function in the GNU C Library (aka glibc or libc6) 2↗2022-05-24
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OSV
glibc vulnerabilities↗2022-03-01
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CVEList
CVE-2020-29562: The iconv function in the GNU C Library (aka glibc or libc6) 2↗2020-12-04
▶
OSV
CVE-2020-29562: The iconv function in the GNU C Library (aka glibc or libc6) 2↗2020-12-04
▶

📋Vendor Advisories

3
Ubuntu
GNU C Library vulnerabilities↗2022-03-01
▶
Red Hat
glibc: assertion failure in iconv when converting invalid UCS4↗2020-11-19
▶
Debian
CVE-2020-29562: glibc - The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when ...↗2020
▶
CVE-2020-29562 — Reachable Assertion in GNU Glibc | cvebase