CVE-2015-4495 on CISA KEV

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

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

• bugzilla.mozilla.org — https://bugzilla.mozilla.org/show_bug.cgi?id=1179262
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html
• www.securityfocus.com — http://www.securityfocus.com/bid/76249
• www.exploit-db.com — https://www.exploit-db.com/exploits/37772/
• rhn.redhat.com — http://rhn.redhat.com/errata/RHSA-2015-1581.html
• security.gentoo.org — https://security.gentoo.org/glsa/201512-10
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
• www.ubuntu.com — http://www.ubuntu.com/usn/USN-2707-1
• www.oracle.com — http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
• bugzilla.mozilla.org — https://bugzilla.mozilla.org/show_bug.cgi?id=1178058
• blog.mozilla.org — https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/
• www.mozilla.org — http://www.mozilla.org/security/announce/2015/mfsa2015-78.html
• www.securitytracker.com — http://www.securitytracker.com/id/1033216
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

Vendor	Product	Versions
n	a / n/a	n/a

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

Open in Sigma generator →