CVE-2016-0755
The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy connections, which might allow remote attackers to authenticate as other users via
02 Description
The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy connections, which might allow remote attackers to authenticate as other users via
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 9.08% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 95.2% of scored records. A rank, not a probability.
- NVD base score
- 7.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-01-29 20:00Z10 YR AGO
- Last updated
- 2024-08-05 22:30Z2 YR AGO
- Reserved
- 2015-12-16
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-287Improper AuthenticationClass
- Data version
- 5.1
- Document digest
- 1f0305a7c13545618adc175c9bb93f4f6286f92a27e91fa7b2eb14c42e9367e9
05 Affected products
06 References
- lists.fedoraproject.orgFEDORA-2016-57bebab3b6http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176413.html
- packetstormsecurity.comhttp://packetstormsecurity.com/files/135695/Slackware-Security-Advisory-curl-Updates.html
- lists.opensuse.orgopenSUSE-SU-2016:0360http://lists.opensuse.org/opensuse-updates/2016-02/msg00031.html
- lists.fedoraproject.orgFEDORA-2016-3fa315a5ddhttp://lists.fedoraproject.org/pipermail/package-announce/2016-February/176546.html
- lists.apple.comAPPLE-SA-2016-09-20http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- curl.haxx.sehttp://curl.haxx.se/docs/adv_20160127A.html
- www.slackware.comSSA:2016-039-01http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.519965
- www.debian.orgDSA-3455http://www.debian.org/security/2016/dsa-3455
- lists.opensuse.orgopenSUSE-SU-2016:0376http://lists.opensuse.org/opensuse-updates/2016-02/msg00047.html
- www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- www.securityfocus.com82307http://www.securityfocus.com/bid/82307
- support.apple.comhttps://support.apple.com/HT207170
- lists.opensuse.orgopenSUSE-SU-2016:0373http://lists.opensuse.org/opensuse-updates/2016-02/msg00044.html
- www.securitytracker.com1034882http://www.securitytracker.com/id/1034882
- lists.fedoraproject.orgFEDORA-2016-5a141de5d9http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177383.html
- www.ubuntu.comUSN-2882-1http://www.ubuntu.com/usn/USN-2882-1
- security.gentoo.orgGLSA-201701-47https://security.gentoo.org/glsa/201701-47
- lists.fedoraproject.orgFEDORA-2016-55137a3adbhttp://lists.fedoraproject.org/pipermail/package-announce/2016-February/177342.html
07 Fixed in
Debian 12
- curl Fixed in 7.47.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- curl Fixed in 7.47.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- curl Fixed in 7.47.0-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- curl Fixed in 7.35.0-1ubuntu2.6
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.