CVE-2017-5465

CRITICAL

Debian Linux < 45.9.0 - Out-of-Bounds Read

Title source: rule
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-5465. PoCs published by Google Security Research.

AI-analyzed exploit summary This PoC demonstrates an out-of-bounds read vulnerability in Firefox's SVG filter processing, specifically in the `ConvolvePixel` function, caused by a negative `kernelUnitLength`. It leads to memory disclosure, which can be extracted via a canvas element.

Description

An out-of-bounds read while processing SVG content in "ConvolvePixel". This results in a crash and also allows for otherwise inaccessible memory being copied into SVG graphic content, which could then displayed. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · htmldosmultiple
https://www.exploit-db.com/exploits/42072

This PoC demonstrates an out-of-bounds read vulnerability in Firefox's SVG filter processing, specifically in the `ConvolvePixel` function, caused by a negative `kernelUnitLength`. It leads to memory disclosure, which can be extracted via a canvas element.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Mozilla Firefox (Nightly ASan build, confirmed)
No auth needed
Prerequisites: Victim must visit a malicious webpage hosting the SVG
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (12)

Core 12
Core References
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1106
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-12/
Exploit, Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://bugzilla.mozilla.org/show_bug.cgi?id=1347617
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-11/
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-10/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/97940
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42072/
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2017/dsa-3831
Vendor Advisory x_refsource_confirm
https://www.mozilla.org/security/advisories/mfsa2017-13/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038320
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1104
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:1201

Scores

CVSS v3 9.1
EPSS 0.2344
EPSS Percentile 96.1%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Details

CWE
CWE-125
Status published
Products (17)
debian/debian_linux 8.0
mozilla/firefox 52.0
mozilla/firefox < 45.9.0
mozilla/thunderbird < 52.1.0
redhat/enterprise_linux 6.0
redhat/enterprise_linux 7.0
redhat/enterprise_linux_desktop 6.0
redhat/enterprise_linux_desktop 7.0
redhat/enterprise_linux_server 6.0
redhat/enterprise_linux_server 7.0
... and 7 more
Published Jun 11, 2018
Tracked Since Feb 18, 2026