CVE-2015-6806
medium
CVSS v3
—
CVSS v4 NEW
—
VIR risk
5.0
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.3.1-2 |
| debian | bullseye | fixed | 4.3.1-2 |
| debian | forky | fixed | 4.3.1-2 |
| debian | sid | fixed | 4.3.1-2 |
| debian | trixie | fixed | 4.3.1-2 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| gnu | gnu_screen | {"endIncluding":"4.3.1"} | |
References
- https://www.suse.com/security/cve/CVE-2015-6806.html
- 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/
- https://security-tracker.debian.org/tracker/CVE-2015-6806
CWEs
CWE-119
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.