curl: certificate check bypass when built with DarwinSSL as TLS backend
Published Jan 15, 2015
5.8
MEDIUMCVSS 2.0
EPSS 1.15%
Description
The darwinssl_connect_step1 function in lib/vtls/curl_darwinssl.c in libcurl 7.31.0 through 7.39.0, when using the DarwinSSL (aka SecureTransport) back-end for TLS, does not check if a cached TLS session validated the certificate when reusing the session, which allows man-in-the-middle attackers to spoof servers via a crafted certificate.
Affected products
No data.
Configuration 2
- 7.31.0
- 7.32.0
- 7.33.0
- 7.34.0
- 7.35.0
- 7.36.0
- 7.37.0
- 7.37.1
- 7.38.0
- 7.39
No data.
Red Hat Enterprise Linux 5
curl
Not affected
Red Hat Enterprise Linux 6
curl
Not affected
Red Hat Enterprise Linux 7
curl
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 6 | curl | Not affected | n/a |
| Red Hat Enterprise Linux 7 | curl | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of curl as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they do no use DarwinSSL library as TLS backend.
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:P/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.15% (0.01148) | 65.66th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.15% (0.01148) | 62.58th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.97% (0.00965) | 74.52th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.45% (0.03445) | 78.96th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.04% (0.01043) | 75.94th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.15% (0.00148) | 52.32th | v3 (v2023.03.01) |
| Jun 19, 2024 | 0.15% (0.00146) | 50.70th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.15% (0.00146) | 48.69th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (10)
- http://curl.haxx.se/docs/adv_20150108A.html x_refsource_CONFIRMVendor Advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10743 x_refsource_CONFIRM
- http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html vendor-advisoryx_refsource_APPLE
- http://secunia.com/advisories/61925 third-party-advisoryx_refsource_SECUNIA
- https://access.redhat.com/security/cve/CVE-2014-8151 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1178698 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-8151
- https://security.gentoo.org/glsa/201701-47 vendor-advisoryx_refsource_GENTOO
- https://support.apple.com/kb/HT205031 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2014-8151
| Link | Providers | Tags |
|---|---|---|
| http://curl.haxx.se/docs/adv_20150108A.html | x_refsource_CONFIRMVendor Advisory | |
| http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10743 | x_refsource_CONFIRM | |
| http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html | vendor-advisoryx_refsource_APPLE | |
| http://secunia.com/advisories/61925 | third-party-advisoryx_refsource_SECUNIA | |
| https://access.redhat.com/security/cve/CVE-2014-8151 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1178698 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-8151 | ||
| https://security.gentoo.org/glsa/201701-47 | vendor-advisoryx_refsource_GENTOO | |
| https://support.apple.com/kb/HT205031 | x_refsource_CONFIRM | |
| https://www.cve.org/CVERecord?id=CVE-2014-8151 |
Change history (0)
No recorded changes yet.