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Fencer Vulns
medium 5.5

CVE-2023-34823 json

fdkaac before 1.0.5 was discovered to contain a stack overflow in read_callback function in src/main.c.

published 2023-06-14 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-38864

cvss
5.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 22%
public exploits
0
none known

Summary

fdkaac before 1.0.5 was discovered to contain a stack overflow in read_callback function in src/main.c.

Patch / fix

  • fdkaac_project fdkaac 1.0.5
  • fdkaac Debian 14, Debian 13 1.0.6-0.1

debian advisories DEBIAN-CVE-2023-34823

  • fdkaac Ubuntu Pro 16.04 LTS 0.6.2-1ubuntu0.1~esm1
  • fdkaac Ubuntu Pro 18.04 LTS 0.6.3-1ubuntu0.18.04.1~esm1
  • fdkaac Ubuntu Pro 20.04 LTS 0.6.3-1ubuntu0.20.04.1~esm1
  • fdkaac Ubuntu Pro 22.04 LTS 1.0.0-1ubuntu0.22.04.1~esm1
  • fdkaac Ubuntu Pro 24.04 LTS 1.0.0-1ubuntu0.24.04.1~esm1

ubuntu advisories UBUNTU-CVE-2023-34823

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
22 mo ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/nu774/fdkaac/issues/55 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CNA 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.