Vulnerability Description
The MScrollV function in ansi.c in GNU screen 4.3.1 and earlier does not properly limit recursion, which allows remote attackers to cause a denial of service (stack consumption) via an escape sequence with a large repeat count value.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Gnu Screen | <= 4.3.1 |
Related Weaknesses (CWE)
References
- http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d26
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html
- http://www.debian.org/security/2015/dsa-3352
- http://www.openwall.com/lists/oss-security/2015/09/01/1
- http://www.openwall.com/lists/oss-security/2015/09/03/11Exploit
- http://www.openwall.com/lists/oss-security/2015/09/03/4
- https://savannah.gnu.org/bugs/?45713ExploitVendor Advisory
- https://usn.ubuntu.com/3996-1/
- http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d26
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html
- http://www.debian.org/security/2015/dsa-3352
- http://www.openwall.com/lists/oss-security/2015/09/01/1
- http://www.openwall.com/lists/oss-security/2015/09/03/11Exploit
- http://www.openwall.com/lists/oss-security/2015/09/03/4
- https://savannah.gnu.org/bugs/?45713ExploitVendor Advisory
FAQ
What is CVE-2015-6806?
CVE-2015-6806 is a vulnerability with a CVSS score of 5.0 (MEDIUM). The MScrollV function in ansi.c in GNU screen 4.3.1 and earlier does not properly limit recursion, which allows remote attackers to cause a denial of service (stack consumption) via an escape sequence...
How severe is CVE-2015-6806?
CVE-2015-6806 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2015-6806?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Gnu Screen.