PT-2016-2279 · Curl+3 · Libcurl+3

Isaac Boukris · Published 2016-01-27 · Updated 2024-06-15 · CVE-2016-0755

Positive Technologies (AI Summary)

CVSS v3.1

7.3

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions libcurl versions prior to 7.47.0

Description The issue is related to the ConnectionExists function in lib/url.c, which has weaknesses in its authentication procedure. This could allow a remote attacker to authenticate as another user by sending a request. The problem is associated with the improper re-use of NTLM-authenticated proxy connections.

Recommendations For versions prior to 7.47.0, update to version 7.47.0 or later to resolve the issue. As a temporary workaround, consider restricting access to NTLM-authenticated proxy connections to minimize the risk of exploitation. Avoid using the ConnectionExists function in lib/url.c until the issue is resolved.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

CWE-305

Related Identifiers

ALT-PU-2016-1225

BDU:2016-01656

CVE-2016-0755

DSA-3455-1

MGASA-2016-0050

OPENSUSE-SU-2024:10303-1

SUSE-SU-2016:0340-1

SUSE-SU-2016:0347-1

SUSE-SU-2016:0778-1

SUSE-SU-2016_0340-1

SUSE-SU-2016_0347-1

USN-2882-1

Affected Products

Alt Linux

Suse

Ubuntu

Libcurl

References · 86

• http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177383.html · Vendor Advisory
• https://security.gentoo.org/glsa/201701-47 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10303-1 · Vendor Advisory
• http://curl.haxx.se/docs/adv_20160127A.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-0755 · Security Note
• http://ubuntu.com/usn/USN-2882-1 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3455-1 · Vendor Advisory
• https://osv.dev/vulnerability/CURL-CVE-2016-0755 · Vendor Advisory
• http://debian.org/security/2016/dsa-3455 · Vendor Advisory
• https://bdu.fstec.ru/vul/2016-01656 · Security Note
• https://security-tracker.debian.org/tracker/DSA-3455-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2016-0755 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2016:0347-1 · Vendor Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176413.html · Vendor Advisory
• http://lists.opensuse.org/opensuse-updates/2016-02/msg00047.html · Vendor Advisory