Mozilla: Delegated OCSP responder certificates failure with id-pkix-ocsp-nocheck extension (MFSA 2015-08)
Published Jan 14, 2015
4.3
MEDIUMCVSS 2.0
EPSS 1.50%
Description
Mozilla Firefox before 35.0 and SeaMonkey before 2.32 do not consider the id-pkix-ocsp-nocheck extension in deciding whether to trust an OCSP responder, which makes it easier for remote attackers to obtain sensitive information by sniffing the network during a session in which there was an incorrect decision to accept a compromised and revoked certificate.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox
Will not fix
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
firefox
Will not fix
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
firefox
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Will not fix | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.
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:M/Au:N/C:P/I:N/A:N
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 | 1.50% (0.01497) | 73.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.57% (0.01568) | 72.03th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.53% (0.00533) | 64.71th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.64% (0.01643) | 70.47th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.53% (0.00533) | 65.37th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.34% (0.00336) | 72.14th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.34% (0.00336) | 70.49th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.34% (0.00341) | 66.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (21)
- http://lists.opensuse.org/opensuse-security-announce/2015-01/msg00014.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00002.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/62242 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62250 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62253 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62316 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62418 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62446 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/62790 third-party-advisoryx_refsource_SECUNIA
- http://www.mozilla.org/security/announce/2014/mfsa2015-08.html x_refsource_CONFIRMVendor Advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-08.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/72042 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1031533 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2014-8642 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1079658 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1180974 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/99963 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2014-8642
- https://security.gentoo.org/glsa/201504-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2014-8642
Change history (0)
No recorded changes yet.