Vulnerability Monitor

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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.

Security Impact Summary

CVE-2015-6806 is a security vulnerability that . Impacting 1 product from gnu organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2015, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2015-09-28T20:59:06.280

Last Modified

2026-06-17T00:31:27.093

Status

Modified

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	gnu_screen	≤ 4.3.1	Yes

References

http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html ([email protected])
http://www.debian.org/security/2015/dsa-3352 ([email protected])
http://www.openwall.com/lists/oss-security/2015/09/01/1 ([email protected])
http://www.openwall.com/lists/oss-security/2015/09/03/11 Exploit ([email protected])
http://www.openwall.com/lists/oss-security/2015/09/03/4 ([email protected])
https://savannah.gnu.org/bugs/?45713 Exploit, Vendor Advisory ([email protected])
https://usn.ubuntu.com/3996-1/ ([email protected])
http://git.savannah.gnu.org/cgit/screen.git/commit/?id=b7484c224738247b510ed0d268cd577076958f1b (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00001.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2015/dsa-3352 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/09/01/1 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/09/03/11 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2015/09/03/4 (af854a3a-2127-422b-91ae-364da2661108)
https://savannah.gnu.org/bugs/?45713 Exploit, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3996-1/ (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For gnu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.