9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.035 Low
EPSS
Percentile
91.6%
Issue Overview:
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.(CVE-2018-20969)
GNU patch through 2.7.6 is vulnerable to OS shell command injection that can be exploited by opening a crafted patch file that contains an ed style diff payload with shell metacharacters. The ed editor does not need to be present on the vulnerable system. This is different from CVE-2018-1000156. (CVE-2019-13638)
A heap-based out-of-bounds read flaw was found in the way the patch utility parsed patch files. An attacker could potentially use this flaw to crash the patch utility by tricking it into processing crafted patch files.(CVE-2016-10713)
A double-free flaw was found in the way the patch utility processed patch files. An attacker could potentially use this flaw to crash the patch utility by tricking it into processing crafted patches.(CVE-2018-6952)
Affected Packages:
patch
Issue Correction:
Run yum update patch to update your system.
New Packages:
i686:
patch-2.7.1-12.14.amzn1.i686
patch-debuginfo-2.7.1-12.14.amzn1.i686
src:
patch-2.7.1-12.14.amzn1.src
x86_64:
patch-2.7.1-12.14.amzn1.x86_64
patch-debuginfo-2.7.1-12.14.amzn1.x86_64
Red Hat: CVE-2016-10713, CVE-2018-20969, CVE-2018-6952, CVE-2019-13638
Mitre: CVE-2016-10713, CVE-2018-20969, CVE-2018-6952, CVE-2019-13638
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | patch | < 2.7.1-12.14.amzn1 | patch-2.7.1-12.14.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | patch-debuginfo | < 2.7.1-12.14.amzn1 | patch-debuginfo-2.7.1-12.14.amzn1.i686.rpm |
Amazon Linux | 1 | x86_64 | patch | < 2.7.1-12.14.amzn1 | patch-2.7.1-12.14.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | patch-debuginfo | < 2.7.1-12.14.amzn1 | patch-debuginfo-2.7.1-12.14.amzn1.x86_64.rpm |
9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
0.035 Low
EPSS
Percentile
91.6%