Vulnerability in Apport Project
CVE-2019-7307
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.
Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)
EPSS: 0.003 (25.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Apport_project Apport — versions 2.14.1, 2.20.1, 2.20.9
- Canonical Ubuntu_linux — versions 14.04, 16.04, 18.04
- Ubuntu Apport — versions before 2.14.1-0ubuntu3.29+esm1, before 2.20.1-0ubuntu2.19, before 2.20.9-0ubuntu7.7
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (Vendor Advisory)
- security@ubuntu.com (Exploit, Issue Tracking, Vendor Advisory)
- security@ubuntu.com
Frequently asked questions
- What is CVE-2019-7307?
- CVE-2019-7307 is a high-severity vulnerability in Apport Project, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.0/10. Published 2019-08-29.
- How severe is CVE-2019-7307?
- High severity. CVSS v3 base score is 7.0 out of 10.
- Is CVE-2019-7307 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.