Back
CVE-2012-4922
The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values,…
Medium5.0EPSS 2.2%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The tor_timegm function in common/util.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.22-rc, does not properly validate time values, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed directory object, a different vulnerability than CVE-2012-4419.
Timeline
ID reserved
By mitre
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 2.2% · top 17% of all CVEs (8 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (8)
- GLSA-201301-03 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://trac.torproject.org/projects/tor/ticket/6811 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [oss-security] 20120912 CVE id request: tor (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2012-14638 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://gitweb.torproject.org/tor.git/commit/973c18bf0e84d14d8006a9ae97fde7f7fb97e404 (opens in a new tab)x_refsource_CONFIRMx_transferred
- [tor-talk] 20120912 Tor 0.2.3.22-rc is out (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2012:1278 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-4922)Record last updated .