CVE-2013-4206
- Source
- https://cve.org/CVERecord?id=CVE-2013-4206
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2013-4206.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2013-4206
- Downstream
- Related
- Published
- 2013-08-19T23:55:08Z
- Modified
- 2026-02-04T04:15:32.326611Z
- Summary
- [none]
- Details
-
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
-
- http://secunia.com/advisories/54379
- http://secunia.com/advisories/54533
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html
- http://www.debian.org/security/2013/dsa-2736
- http://svn.tartarus.org/sgt/putty/sshbn.c?sortby=date&r1=9977&r2=9976&pathrev=9977
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html
- http://www.openwall.com/lists/oss-security/2013/08/06/11