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Fencer Vulns
high 8.3

CVE-2017-12839 json

A heap-based buffer over-read in the getbits function in src/libmpg123/getbits.h in mpg123 through 1.25.5 allows remote attackers to cause…

published 2019-05-09 7 y ago modified 2026-06-17 4 mo ago also EUVD-2017-4376

cvss
8.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

A heap-based buffer over-read in the getbits function in src/libmpg123/getbits.h in mpg123 through 1.25.5 allows remote attackers to cause a possible denial-of-service (out-of-bounds read) or possibly have unspecified other impact via a crafted mp3 file.

Patch / fix

  • mpg123 Debian 14, Debian 13, Debian 12 1.25.6-1

debian advisories DEBIAN-CVE-2017-12839

  • mpg123 Ubuntu Pro 14.04 LTS 1.16.0-1ubuntu1.1+esm2
  • mpg123 Ubuntu Pro 16.04 LTS 1.22.4-1ubuntu0.1+esm2

ubuntu advisories UBUNTU-CVE-2017-12839

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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-12839 updated cvss 5.9

mpg123: heap-based buffer over-read in function getbits insrc/libmpg123/getbits.h

  • Red Hat Enterprise Linux 7 mpg123, mpg123-libs, mpg123-plugins-pulseaudio Red Hat Enterprise Linux 8 mpg123, mpg123-libs, mpg123-plugins-pulseaudio
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.81% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • sourceforge.net https://sourceforge.net/p/mpg123/bugs/255/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

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.