CVE-2018-20969

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 9.3 HIGH

7.8^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://git.savannah.gnu.org/cgit/patch.git/commit/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0	Patch Vendor Advisory
https://seclists.org/bugtraq/2019/Aug/29	Exploit Mailing List Patch Third Party Advisory
http://packetstormsecurity.com/files/154124/GNU-patch-Command-Injection-Directory-Traversal.html	Third Party Advisory VDB Entry
https://github.com/irsl/gnu-patch-vulnerabilities
https://access.redhat.com/errata/RHSA-2019:2798
https://access.redhat.com/errata/RHSA-2019:2964
https://access.redhat.com/errata/RHSA-2019:3757
https://access.redhat.com/errata/RHSA-2019:4061
https://access.redhat.com/errata/RHSA-2019:3758

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Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:patch:*:*:*:*:*:*:*:*

Information

Published : 2019-08-15 21:15

Updated : 2019-09-05 09:15

NVD link : CVE-2018-20969

Mitre link : CVE-2018-20969

JSON object : View

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Products Affected

gnu

patch

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