CVE-2015-5309

PuTTY <0.66 - Memory Corruption

Title source: llm

Description

Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.

References (7)

[Mailing List] http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html

[Vendor Advisory] http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1034308

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html

[Mailing List, Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html

[Third Party Advisory] http://www.debian.org/security/2015/dsa-3409

[Third Party Advisory] https://security.gentoo.org/glsa/201606-01

Scores

EPSS 0.0174

EPSS Percentile 82.2%

Classification

CWE

CWE-189

Status draft

Affected Products (4)

opensuse/leap

opensuse/opensuse

opensuse/opensuse

simon_tatham/putty < 0.65

Timeline

Published Dec 07, 2015

Tracked Since Feb 18, 2026