VIR Vulnerability Intelligence Relay

CVE-2016-0755

high
Published 2016-01-29 · Modified 2026-05-06
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
7.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4 NEW
—
not yet in upstream
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 with source_tier=community-verified.

OS impact
OSVersionStatusFixed in
debian debianbookwormfixed7.47.0-1
debian debianbullseyefixed7.47.0-1
debian debianforkyfixed7.47.0-1
debian debiansidfixed7.47.0-1
debian debiantrixiefixed7.47.0-1
debian debian7.0affected
ubuntu ubuntu12.04affected
ubuntu ubuntu14.04affected
ubuntu ubuntu15.04affected
ubuntu ubuntu15.10affected

Application impact
VendorProductVersionsFixed
haxxcurl{"endIncluding":"7.46.0"}

References

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.