PT-2019-12339 · Canonical · Snapd

Matthias Gerstner · Published 2019-04-24 · Updated 2019-07-13 · CVE-2019-11503

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions snapd versions prior to 2.39

Description The issue concerns a "cwd restore permission bypass" due to symlink races when performing the chdir() to the current working directory of the calling user.

Recommendations For versions prior to 2.39, update to version 2.39 or later to resolve the issue.

Exploit

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

CVE-2019-11503

Affected Products

Snapd

References · 12

• 🔥 https://openwall.com/lists/oss-security/2019/04/18/4 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-11503 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-11503 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2019-11503 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-11503 · Security Note
• https://ubuntu.com/security/CVE-2019-11503 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-11503 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-11503 · Vendor Advisory
• https://github.com/snapcore/snapd/pull/6642 · Note
• http://openwall.com/lists/oss-security/2019/04/25/7 · Note