xulrunner: Google CityHash hash function collisions (oCERT-2012-001)
Published Nov 28, 2012
5.0
MEDIUMCVSS 2.0
EPSS 0.61%
Description
Google CityHash computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox
Not affected
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 5
xulrunner
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 6
xulrunner
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 5 | xulrunner | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | xulrunner | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not Vulnerable. This issue does not affect the versions of xulrunner, firefox and thunderbird as shipped with Red Hat Enterprise Linux 5 and 6.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.61% (0.00610) | 47.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.61% (0.00610) | 44.33th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.23% (0.00227) | 43.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.13% (0.00125) | 48.83th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.12% (0.00122) | 45.94th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.08% (0.00081) | 33.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.13% (0.00125) | 45.40th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00950) | 32.28th | v2 (v2022.01.01) |
| Sep 10, 2022 | 0.95% (0.00950) | 30.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.95% (0.00950) | 28.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00950) | 13.46th | v2 (v2022.01.01) |
References (8)
- http://2012.appsec-forum.ch/conferences/#c17 x_refsource_MISC
- http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf x_refsource_MISC
- http://code.google.com/p/cityhash/source/browse/trunk/NEWS x_refsource_MISC
- https://access.redhat.com/security/cve/CVE-2012-6051 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=882910 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-6051
- https://www.131002.net/data/talks/appsec12_slides.pdf x_refsource_MISC
- https://www.cve.org/CVERecord?id=CVE-2012-6051
| Link | Providers | Tags |
|---|---|---|
| http://2012.appsec-forum.ch/conferences/#c17 | x_refsource_MISC | |
| http://asfws12.files.wordpress.com/2012/11/asfws2012-jean_philippe_aumasson-martin_bosslet-hash_flooding_dos_reloaded.pdf | x_refsource_MISC | |
| http://code.google.com/p/cityhash/source/browse/trunk/NEWS | x_refsource_MISC | |
| https://access.redhat.com/security/cve/CVE-2012-6051 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=882910 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2012-6051 | ||
| https://www.131002.net/data/talks/appsec12_slides.pdf | x_refsource_MISC | |
| https://www.cve.org/CVERecord?id=CVE-2012-6051 |
Change history (0)
No recorded changes yet.