Buffer overflow in GNU Screen
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v2 metric
CVSS v2 base score 5.0 (Medium). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.041 (90.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2015/09/03/11 (mailing-list, Exploit)
- www.openwall.com/lists/oss-security/2015/09/01/1 (mailing-list)
- git.savannah.gnu.org/cgit/screen.git/commit/
- www.openwall.com/lists/oss-security/2015/09/03/4 (mailing-list)
- savannah.gnu.org/bugs/ (Exploit, Vendor Advisory)
- www.debian.org/security/2015/dsa-3352 (vendor-advisory)
- usn.ubuntu.com/3996-1/ (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html (vendor-advisory)
Frequently asked questions
- What is CVE-2015-6806?
- CVE-2015-6806 is a vulnerability in GNU Screen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-09-28.
- Is CVE-2015-6806 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.