curl: host name out of boundary memory access
Published Apr 24, 2015
9.0
HIGHCVSS 2.0
EPSS 10.95%
Description
The fix_hostname function in cURL and libcurl 7.37.0 through 7.41.0 does not properly calculate an index, which allows remote attackers to cause a denial of service (out-of-bounds read or write and crash) or possibly have other unspecified impact via a zero-length host name, as demonstrated by "http://:80" and ":80."
Affected products
No data.
Configuration 1
- ≤ 2.3.20
- ≤ 3.0.22
Configuration 2
Configuration 3
Configuration 4
- 12.04
- 14.04
- 14.10
- 15.04
- 7.0
No data.
Red Hat Ceph Storage 1.2
curl
Not affected
Red Hat Enterprise Linux 5
curl
Not affected
Red Hat Enterprise Linux 6
curl
Not affected
Red Hat Enterprise Linux 7
curl
Not affected
Red Hat Enterprise Virtualization 3
mingw-virt-viewer
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Ceph Storage 1.2 | curl | Not affected | n/a |
| 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 |
| Red Hat Enterprise Virtualization 3 | mingw-virt-viewer | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue does not affect the version of curl 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:L/Au:S/C:C/I:C/A:C
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 (32 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.95% (0.10951) | 95.76th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.03% (0.11027) | 95.33th | v5 (v2026.06.15) |
| Dec 4, 2025 | 1.01% (0.01008) | 76.38th | v4 (v2025.03.14) |
| Dec 1, 2025 | 4.97% (0.04969) | 89.32th | v4 (v2025.03.14) |
| Nov 4, 2025 | 2.16% (0.02164) | 83.73th | v4 (v2025.03.14) |
| Nov 1, 2025 | 4.97% (0.04969) | 89.23th | v4 (v2025.03.14) |
| Oct 4, 2025 | 1.80% (0.01803) | 82.14th | v4 (v2025.03.14) |
| Oct 1, 2025 | 3.45% (0.03447) | 87.09th | v4 (v2025.03.14) |
| Sep 4, 2025 | 2.43% (0.02429) | 84.58th | v4 (v2025.03.14) |
| Sep 1, 2025 | 4.61% (0.04608) | 88.91th | v4 (v2025.03.14) |
| Aug 5, 2025 | 2.43% (0.02429) | 84.51th | v4 (v2025.03.14) |
| Aug 1, 2025 | 4.61% (0.04608) | 88.92th | v4 (v2025.03.14) |
| Jul 4, 2025 | 2.43% (0.02429) | 84.47th | v4 (v2025.03.14) |
| Jul 1, 2025 | 4.61% (0.04608) | 88.83th | v4 (v2025.03.14) |
| Jun 4, 2025 | 2.43% (0.02429) | 84.34th | v4 (v2025.03.14) |
| Jun 1, 2025 | 4.61% (0.04608) | 88.75th | v4 (v2025.03.14) |
| May 10, 2025 | 2.62% (0.02618) | 84.83th | v4 (v2025.03.14) |
| May 9, 2025 | 1.49% (0.01487) | 80.02th | v4 (v2025.03.14) |
| May 1, 2025 | 3.50% (0.03499) | 86.99th | v4 (v2025.03.14) |
| Apr 18, 2025 | 1.49% (0.01487) | 80.00th | v4 (v2025.03.14) |
| Apr 17, 2025 | 3.50% (0.03499) | 86.92th | v4 (v2025.03.14) |
| Apr 4, 2025 | 1.49% (0.01487) | 79.37th | v4 (v2025.03.14) |
| Apr 3, 2025 | 3.50% (0.03499) | 86.52th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.49% (0.01487) | 79.28th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.21% (0.07207) | 85.70th | v4 (v2025.03.14) |
| Mar 28, 2025 | 3.50% (0.03499) | 86.50th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.45% (0.01447) | 79.42th | v4 (v2025.03.14) |
| Dec 12, 2024 | 6.55% (0.06553) | 94.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 6.51% (0.06512) | 92.58th | 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://curl.haxx.se/docs/adv_20150422D.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://lists.fedoraproject.org/pipermail/package-announce/2015-April/155957.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/156945.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157017.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157188.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-updates/2015-04/msg00057.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2015/dsa-3232 vendor-advisoryx_refsource_DEBIAN
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/cpuoct2015-2367953.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/74300 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032232 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2591-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-3144 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1213335 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-3144
- https://security.gentoo.org/glsa/201509-02 vendor-advisoryx_refsource_GENTOO
- https://support.apple.com/kb/HT205031 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2015-3144
Change history (0)
No recorded changes yet.