CVE-2016-0755
high
CVSS v3
7.3
CVSS v4 NEW
—
VIR risk
7.3
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 a request, a similar issue to CVE-2014-0015.
Predictions
Exploit likelihood
82%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Ubuntu Affected 4 releases
| Version | Status | Fixed in |
|---|---|---|
| 15.10 | Affected | — |
| 15.04 | Affected | — |
| 14.04 | Affected | — |
| 12.04 | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 7.47.0-1 |
| sid | Fixed | 7.47.0-1 |
| forky | Fixed | 7.47.0-1 |
| bullseye | Fixed | 7.47.0-1 |
| bookworm | Fixed | 7.47.0-1 |
| 7.0 | Affected | — |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| haxx | curl | {"endIncluding":"7.46.0"} | |
References
- http://curl.haxx.se/docs/adv_20160127A.html
- http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176546.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177342.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177383.html
- http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176413.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00031.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00044.html
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00047.html
- http://packetstormsecurity.com/files/135695/Slackware-Security-Advisory-curl-Updates.html
- http://www.debian.org/security/2016/dsa-3455
- http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
- http://www.securityfocus.com/bid/82307
- http://www.securitytracker.com/id/1034882
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.519965
- http://www.ubuntu.com/usn/USN-2882-1
- https://security.gentoo.org/glsa/201701-47
- https://support.apple.com/HT207170
- https://security-tracker.debian.org/tracker/CVE-2016-0755
CWEs
CWE-287
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.