ghsa-w9g5-3qgc-xmgx
Vulnerability from github
Published
2022-05-24 17:16
Modified
2022-10-07 18:15
Severity ?
Details
Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.
{ "affected": [], "aliases": [ "CVE-2020-8833" ], "database_specific": { "cwe_ids": [ "CWE-367" ], "github_reviewed": false, "github_reviewed_at": null, "nvd_published_at": "2020-04-22T22:15:00Z", "severity": "LOW" }, "details": "Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.", "id": "GHSA-w9g5-3qgc-xmgx", "modified": "2022-10-07T18:15:49Z", "published": "2022-05-24T17:16:19Z", "references": [ { "type": "ADVISORY", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-8833" }, { "type": "WEB", "url": "https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1862933" }, { "type": "WEB", "url": "https://usn.ubuntu.com/4315-1" }, { "type": "WEB", "url": "https://usn.ubuntu.com/4315-2" } ], "schema_version": "1.4.0", "severity": [ { "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N", "type": "CVSS_V3" } ] }
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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.