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Fencer Intel
critical 9.3

CVE-2015-4493 json

Heap-based buffer overflow in the stagefright::ESDS::parseESDescriptor function in libstagefright in Mozilla Firefox before 40.0 and Firefo…

published 11y ago modified 4mo ago also EUVD-2015-4513

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.7%
EPSS 6.7% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known

Summary

Heap-based buffer overflow in the stagefright::ESDS::parseESDescriptor function in libstagefright in Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 allows remote attackers to execute arbitrary code via an invalid size field in an esds chunk in MPEG-4 video data, a related issue to CVE-2015-1539.

Patch / fix

  • firefox Ubuntu 14.04 LTS 40.0+build4-0ubuntu0.14.04.1

ubuntu advisories UBUNTU-CVE-2015-4493

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

  • firefox RHEL 5 38.2.0-4.el5_11
  • firefox RHEL 6 38.2.0-4.el6_7
  • firefox RHEL 7 38.2.0-4.el7_1

red hat advisories RHSA-2015:1586

  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1
  • MozillaThunderbird openSUSE Tumbleweed 45.5.1-1.1

opensuse advisories openSUSE-SU-2024:10071-1openSUSE-SU-2024:10230-1

Is CVE-2015-4493 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2015-4493 updated cvss 6.8

Mozilla: Overflow issues in libstagefright (MFSA 2015-83)

  • Red Hat Enterprise Linux (v. 5 server) firefox 38.2.0-4.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 38.2.0-4.el7_1 Red Hat Enterprise Linux Client Optional (v. 7) firefox 38.2.0-4.el7_1 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 38.2.0-4.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 38.2.0-4.el6_7
    +9 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Server (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Server (v. 7) firefox 38.2.0-4.el7_1, firefox 38.2.0-4.ael7b_1 Red Hat Enterprise Linux Server Optional (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Server Optional (v. 7) firefox 38.2.0-4.el7_1 Red Hat Enterprise Linux Workstation (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Workstation (v. 7) firefox 38.2.0-4.el7_1 Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 38.2.0-4.el6_7 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 38.2.0-4.el7_1
    fixed: vendor fix RHSA-2015:1586
  • Red Hat Enterprise Linux 5 thunderbird Red Hat Enterprise Linux 6 thunderbird Red Hat Enterprise Linux 7 thunderbird
    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

6.65% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel 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.