PT-2015-7362 · Gnu+3 · Gnu Screen+3

Kcwu + 1 · Published 2015-09-04 · Updated 2019-06-02 · CVE-2015-6806

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions GNU screen version 4.3.1 and earlier

Description The issue is related to the MScrollV function in ansi.c, which does not properly limit recursion. This allows remote attackers to cause a denial of service, specifically stack consumption, via an escape sequence with a large repeat count value.

Recommendations For GNU screen version 4.3.1 and earlier, consider updating to a newer version that addresses this issue. As a temporary workaround, restrict the use of the MScrollV function to minimize the risk of exploitation.

Exploit

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2015-1759

ALT-PU-2017-1266

CVE-2015-6806

DLA-305-1

DSA-3352-1

MGASA-2015-0354

OPENSUSE-SU-2019_1485-1

SUSE-SU-2019:1354-1

SUSE-SU-2019_1354-1

USN-3996-1

Affected Products

Alt Linux

Gnu Screen

Suse

Ubuntu

References · 44

• 🔥 http://openwall.com/lists/oss-security/2015/09/03/11 · Exploit
• 🔥 https://savannah.gnu.org/bugs/?45713 · Exploit
• https://errata.altlinux.org/ALT-PU-2017-1266 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-6806 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-6806 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5618 · Security Note
• https://errata.altlinux.org/ALT-PU-2015-1759 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2015-0354 · Vendor Advisory
• https://debian.org/security/2015/dsa-3352 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3996-1 · Vendor Advisory
• http://debian.org/security/2015/dsa-3352 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3352-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-6806 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-6806 · Security Note
• https://security-tracker.debian.org/tracker/DSA-3352-1 · Vendor Advisory