What’s Vulnerable › Vulnerabilities

CVE-2023-1326: local privilege escalation in apport-cli

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-04-13 · updated 2026-06-17
• Weakness: CWE-269

Description

A privilege escalation attack was found in apport-cli 2.26.0 and earlier which is similar to CVE-2023-26604. If a system is specially configured to allow unprivileged users to run sudo apport-cli, less is configured as the pager, and the terminal size can be set: a local attacker can escalate privilege. It is extremely unlikely that a system administrator would configure sudo to allow unprivileged users to perform this class of exploit.

Affected products

• Canonical apport: through 2.26.0
• Canonical Ubuntu Linux: 18.04, 20.04, 22.04, 22.10

References

• https://github.com/canonical/apport/commit/e5f78cc89f1f5888b6a56b785dddcb0364c48ecb
• https://ubuntu.com/security/notices/USN-6018-1
• https://github.com/canonical/apport/commit/e5f78cc89f1f5888b6a56b785dddcb0364c48ecb
• https://ubuntu.com/security/notices/USN-6018-1

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