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high 8.8

CVE-2015-4495 kev in the critical feed json

The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypas…

published 11y ago modified 4mo ago also EUVD-2015-4515

cvss
8.8
version 3.1, CNA
cisa kev
Exploited
added 2022-05-25
epss
68.6%
EPSS 68.6% chance of exploitation in 30 days, percentile 99.3%
public exploits
2
Metasploit and Exploit-DB

Summary

The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015.

Patch / fix

cisa required action Apply updates per vendor instructions.

  • mozilla firefox 38.1.1, 39.0.3
  • mozilla firefox_os 2.2
  • pdf.js Debian 14, Debian 13, Debian 12 1.1.366+dfsg-1

debian advisories DEBIAN-CVE-2015-4495

  • firefox Ubuntu 14.04 LTS 39.0.3+build2-0ubuntu0.14.04.1

ubuntu advisories UBUNTU-CVE-2015-4495

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 38.1.1-1.el5_11
  • firefox RHEL 6 38.1.1-1.el6_7
  • firefox RHEL 7 38.1.1-1.el7_1

red hat advisories RHSA-2015:1581

  • mozilla-nss SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +6 more 3.19.2.0-0.16.1
  • MozillaFirefox SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +6 more 38.2.1esr-19.3
  • MozillaFirefox-branding-SLED SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +4 more 31.0-0.12.51
  • mozilla-nss SLES for SAP 12, SLES 12, SLED 12 +1 more 3.19.2.0-26.2
  • MozillaFirefox SLES for SAP 12, SLES 12, SLED 12 +1 more 38.2.1esr-45.1
  • MozillaFirefox-branding-SLE SLES for SAP 12, SLES 12, SLED 12 31.0-14.1
  • mozilla-nss SLES 11 SP2-LTSS, SLES 11 SP1-TERADATA, SLES 11 SP1-LTSS 3.19.2.0-0.7.1
  • firefox-gcc47 SLES 11 SP2-LTSS, SLES 11 SP1-TERADATA, SLES 11 SP1-LTSS 4.7.2_20130108-0.37.2

suse advisories SUSE-SU-2015:1528-1SUSE-SU-2015:1476-1SUSE-SU-2015:1449-1SUSE-SU-2015:1380-1SUSE-SU-2015:1379-1

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1

Is CVE-2015-4495 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.

Check with Fencer

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-2015-4495 updated cvss 4.3

Mozilla: Same origin violation and local file stealing via PDF reader (MFSA 2015-78)

  • Red Hat Enterprise Linux (v. 5 server) firefox 38.1.1-1.el5_11 Red Hat Enterprise Linux Client (v. 7) firefox 38.1.1-1.el7_1 Red Hat Enterprise Linux Client Optional (v. 7) firefox 38.1.1-1.el7_1 Red Hat Enterprise Linux Desktop (v. 5 client) firefox 38.1.1-1.el5_11 Red Hat Enterprise Linux Desktop (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 38.1.1-1.el6_7
    +9 more products
    Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Server (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Server (v. 7) firefox 38.1.1-1.el7_1, firefox 38.1.1-1.ael7b_1 Red Hat Enterprise Linux Server Optional (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Server Optional (v. 7) firefox 38.1.1-1.el7_1 Red Hat Enterprise Linux Workstation (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Workstation (v. 7) firefox 38.1.1-1.el7_1 Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 38.1.1-1.el6_7 Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 38.1.1-1.el7_1
    fixed: vendor fix RHSA-2015:1581
  • 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

Timeline

  1. Found exploited as a 0-day (Project Zero)
  2. 0-day patched (Project Zero)
  3. Published
  4. First public exploit (EDB-37772)
  5. Added to CISA KEV
  6. CISA patch deadline
  7. CISA SSVC: exploitation active

Known exploited

Added
4y ago
Patch by
2022-06-15 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
Mozilla, Firefox
CISA name
Mozilla Firefox Security Feature Bypass Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Found
2015-08-05
Patched
2015-08-06
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

68.56% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness

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.