What’s Vulnerable › Vulnerabilities

CVE-2019-7307: Apport contains a TOCTTOU vulnerability when reading the users ~/.apport-ignore.xml

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-08-29 · updated 2026-06-17
• Weakness: CWE-367

Description

Apport before versions 2.14.1-0ubuntu3.29+esm1, 2.20.1-0ubuntu2.19, 2.20.9-0ubuntu7.7, 2.20.10-0ubuntu27.1, 2.20.11-0ubuntu5 contained a TOCTTOU vulnerability when reading the users ~/.apport-ignore.xml file, which allows a local attacker to replace this file with a symlink to any other file on the system and so cause Apport to include the contents of this other file in the resulting crash report. The crash report could then be read by that user either by causing it to be uploaded and reported to Launchpad, or by leveraging some other vulnerability to read the resulting crash report, and so allow the user to read arbitrary files on the system.

Affected products

• Apport: 2.14.1, 2.20.1, 2.20.9, 2.20.10

References

• http://packetstormsecurity.com/files/172858/Ubuntu-Apport-Whoopsie-DoS-Integer-Overflow.html
• https://bugs.launchpad.net/ubuntu/%2Bsource/apport/%2Bbug/1830858
• https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-7307.html
• http://packetstormsecurity.com/files/172858/Ubuntu-Apport-Whoopsie-DoS-Integer-Overflow.html
• https://bugs.launchpad.net/ubuntu/%2Bsource/apport/%2Bbug/1830858
• https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-7307.html

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