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CVE-2018-20969

CVE-2018-20969

EPSS 2.7%
do_ed_script in pch.c in GNU patch through 2.7.6 does not block strings beginning with a ! character. NOTE: this is the same commit as for CVE-2019-13638, but the ! syntax is specific to ed, and is unrelated to a shell metacharacter.
Affected products
n/a · n/a

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References
http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.htmlhttps://access.redhat.com/errata/RHSA-2019:2798https://access.redhat.com/errata/RHSA-2019:2964https://access.redhat.com/errata/RHSA-2019:3757https://access.redhat.com/errata/RHSA-2019:3758https://access.redhat.com/errata/RHSA-2019:4061https://github.com/irsl/gnu-patch-vulnerabilitieshttps://git.savannah.gnu.org/cgit/patch.git/commit/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0https://seclists.org/bugtraq/2019/Aug/29