PT-2020-14596 · Debian+2 · Apt+2

Vaisha Bernard · Published 2020-09-24 · Updated 2022-05-24 · CVE-2020-15703

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions apt (affected versions not specified)

Description The issue is related to the lack of input validation on the Locale property in an apt transaction. This allows an unprivileged user to supply a full path to a writable directory, enabling aptd to read a file as root. By utilizing a symlink, an unprivileged user can determine the existence of any files on the system as root, based on the presence or absence of an error message.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Information Disclosure

Path traversal

Weakness Enumeration

CWE-200

CWE-22

Related Identifiers

CVE-2020-15703

GHSA-WPMR-Q825-X4C6

USN-4537-1

Affected Products

Linuxmint

Ubuntu

Apt

References · 14

• 🔥 https://github.com/linuxmint/aptdaemon/blob/4d24cb61575ac6fbee8d5e61ef933e6093ee0a2e/debian/patches/CVE-2020-15703.patch · Exploit
• 🔥 https://eyecontrol.nl/blog/the-story-of-3-cves-in-ubuntu-desktop.html · Exploit
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-15703 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4537-1 · Patch
• https://osv.dev/vulnerability/GHSA-wpmr-q825-x4c6 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-15703 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-15703 · Security Note
• https://cve.org/CVERecord?id=CVE-2020-15703 · Security Note
• https://osv.dev/vulnerability/USN-4537-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-15703 · Vendor Advisory
• https://github.com/linuxmint/aptdaemon · Note
• https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1888235 · Note
• https://t.me/cibsecurity/15756 · Telegram Post
• https://t.me/cybersecuritytechnologies/1997 · Telegram Post