Vulnerability CVE-2020-27350

Vulnerability Name:

CVE-2020-27350 (CCN-192925)

Assigned:

2020-12-09

Published:

2020-12-09

Updated:

2022-10-29

Summary:

APT had several integer overflows and underflows while parsing .deb packages, aka GHSL-2020-168 GHSL-2020-169, in files apt-pkg/contrib/extracttar.cc, apt-pkg/deb/debfile.cc, and apt-pkg/contrib/arfile.cc. This issue affects: apt 1.2.32ubuntu0 versions prior to 1.2.32ubuntu0.2; 1.6.12ubuntu0 versions prior to 1.6.12ubuntu0.2; 2.0.2ubuntu0 versions prior to 2.0.2ubuntu0.2; 2.1.10ubuntu0 versions prior to 2.1.10ubuntu0.1;

CVSS v3 Severity:

5.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L)
5.0 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): Low

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): Low

CVSS v2 Severity:

4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

4.3 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

Vulnerability Type:

CWE-190

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2020-27350

Source: CCN
Type: Debian Web site
Apt

Source: CCN
Type: USN-4667-1
APT vulnerability

Source: CONFIRM
Type: Broken Link
N/A

Source: XF
Type: UNKNOWN
apt-cve202027350-dos(192925)

Source: CONFIRM
Type: Third Party Advisory
https://security.netapp.com/advisory/ntap-20210108-0005/

Source: UBUNTU
Type: Vendor Advisory
N/A

Source: CCN
Type: DSA-4808-1
apt security update

Source: DEBIAN
Type: Vendor Advisory
DSA-4808

Vulnerable Configuration:

Configuration 1:

cpe:/a:debian:advanced_package_tool:*:*:*:*:*:*:*:* (Version >= 1.2.32ubuntu0 and < 1.2.32ubuntu0.2)

AND

cpe:/o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

Configuration 2:

cpe:/a:debian:advanced_package_tool:*:*:*:*:*:*:*:* (Version >= 1.6.12ubuntu0 and < 1.6.12ubuntu0.2)

AND

cpe:/o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

Configuration 3:

cpe:/a:debian:advanced_package_tool:*:*:*:*:*:*:*:* (Version >= 2.0.2ubuntu0 and < 2.0.2ubuntu0.2)

AND