CVE-2015-5309: Integer Overflow
First published: Mon Dec 07 2015(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| SUSE Linux | =42.1 | |
| openSUSE | =13.1 | |
| openSUSE | =13.2 | |
| PuTTY | <=0.65 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html
- http://www.debian.org/security/2015/dsa-3409
- http://www.securitytracker.com/id/1034308
- https://security.gentoo.org/glsa/201606-01
Frequently Asked Questions
What is the severity of CVE-2015-5309?
CVE-2015-5309 has a high severity rating due to its potential for memory corruption and arbitrary code execution.
How do I fix CVE-2015-5309?
To fix CVE-2015-5309, update PuTTY to version 0.66 or later to mitigate the vulnerability.
What systems are affected by CVE-2015-5309?
CVE-2015-5309 affects PuTTY versions prior to 0.66 and specific versions of openSUSE including 13.1, 13.2, and Leap 42.1.
What type of attack does CVE-2015-5309 enable?
CVE-2015-5309 enables remote attackers to perform denial of service attacks or possibly execute arbitrary code.
Is CVE-2015-5309 a local or remote vulnerability?
CVE-2015-5309 is a remote vulnerability that can be exploited by an attacker from a different location.
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