CVE-2015-6806
CVE-2015-6806 is a medium-severity vulnerability in Gnu Gnu Screen with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 4% (90th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Gnu Gnu Screen
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2015-6806?
- 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.
- How severe is CVE-2015-6806?
- CVE-2015-6806 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2015-6806 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2015-6806?
- CVE-2015-6806 affects Gnu Gnu Screen. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2015-6806?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2015-6806 published?
- CVE-2015-6806 was published on 2015-09-28 and last updated on 2026-06-17.
References
- http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b
- 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/2015/09/03/11
- http://www.openwall.com/lists/oss-security/2015/09/03/4
- https://savannah.gnu.org/bugs/?45713
- https://usn.ubuntu.com/3996-1/
Affected products (1)
- cpe:2.3:a:gnu:gnu_screen:*:*:*:*:*:*:*:*
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