CVE-2014-1564

Mozilla Firefox <32 - Info Disclosure

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2014-1564. PoCs published by Michal Zalewski.

AI-analyzed exploit summary This exploit demonstrates an information disclosure vulnerability in Mozilla Firefox and Thunderbird by rendering multiple instances of an image and comparing their data URLs to detect inconsistencies. The PoC checks for variations in rendered images, indicating potential memory corruption or rendering issues.

Description

Mozilla Firefox before 32.0, Firefox ESR 31.x before 31.1, and Thunderbird 31.x before 31.1 do not properly initialize memory for GIF rendering, which allows remote attackers to obtain sensitive information from process memory via crafted web script that interacts with a CANVAS element associated with a malformed GIF image.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Michal Zalewski · javascriptremotemultiple
https://www.exploit-db.com/exploits/39295

This exploit demonstrates an information disclosure vulnerability in Mozilla Firefox and Thunderbird by rendering multiple instances of an image and comparing their data URLs to detect inconsistencies. The PoC checks for variations in rendered images, indicating potential memory corruption or rendering issues.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Moderate
Reliability
Reliable
Target: Mozilla Firefox < 32, Firefox ESR < 31.1, Thunderbird < 31.1
No auth needed
Prerequisites: Victim must visit a malicious webpage hosting the exploit
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (16)

Core 16
Core References
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00024.html
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/533357/100/0/threaded
Mailing List mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2014/Sep/18
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201504-01
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1030794
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/69525
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2014-09/msg00003.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/60148
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2014-09/msg00011.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/61114
Issue Tracking x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1045977
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1030793

Scores

EPSS 0.0546
EPSS Percentile 91.7%

Details

CWE
CWE-824
Status published
Products (7)
mozilla/firefox 30.0
mozilla/firefox 31.0
mozilla/firefox < 31.1.0
mozilla/thunderbird 31.0
opensuse/evergreen 11.4
opensuse/opensuse 12.3
opensuse/opensuse 13.1
Published Sep 03, 2014
Tracked Since Feb 18, 2026