Published: 01/07/2018 Updated: 19/08/2019

CVSS v2 Base Score: 7.5 | Impact Score: 6.4 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 668

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

scripts/grep-excuses.pl in Debian devscripts up to and including 2.18.3 allows code execution through unsafe YAML loading because YAML::Syck is used without a configuration that prevents unintended blessing.

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debian devscripts
canonical ubuntu linux 17.10
canonical ubuntu linux 18.04

Debian Bug report logs - #902409 devscripts: CVE-2018-13043 - grep-excuses uses YAML::Syck in a unsafe way Package: devscripts; Maintainer for devscripts is Devscripts Maintainers <devscripts@packagesdebianorg>; Source for devscripts is src:devscripts (PTS, buildd, popcon) Reported by: Ansgar Burchardt <ansgar@debianor ...

devscripts could be made to run arbitrary code if it received a specially crafted YAML file ...

CWE-94 https://bugs.debian.org/902409 https://usn.ubuntu.com/3704-1/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=902409 https://usn.ubuntu.com/3704-1/https://nvd.nist.gov

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CVE-2018-13043

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