Description
Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-2736-1 | putty security update |
EUVD |
EUVD-2013-4111 | Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication. |
References
History
No history.
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2024-08-06T16:38:01.677Z
Reserved: 2013-06-12T00:00:00.000Z
Link: CVE-2013-4206
No data.
Status : Modified
Published: 2013-08-19T23:55:08.723
Modified: 2026-04-29T01:13:23.040
Link: CVE-2013-4206
No data.
OpenCVE Enrichment
No data.
Weaknesses
Debian DSA
EUVD