Home/CVE/The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy co
CVE

CVE-2016-0755

The ConnectionExists function in lib/url.c in libcurl before 7.47.0 does not properly re-use NTLM-authenticated proxy co

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.

HIGH · CVSS 7.3 EPSS 0.00346
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules7 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

3
haxx curl<= 7.46.0
canonical ubuntu linuxall versions
debian linuxall versions
⚠

Public Exploits & PoCs

1
pocpacketstormsecurity.com · Slackware-Security-Advisory-curl-Updates.htmlpacketstormsecurity.com
◈

Sigma Hunt Rules

7
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From File Sharing Domain Via Curl.EXE
producthighSuspicious File Download From IP Via Curl.EXE
producthighCurl Download And Execute Combination
producthighSuspicious Curl.EXE Download
productmediumSuspicious Curl File Upload - Linux
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Jan 2016 · 08:59 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
⚑

Vendor Advisories

5
suse-csafopenSUSE-SU-2024:10303-1
suse-csafSUSE-SU-2016:0778-1
suse-csafSUSE-SU-2016:0347-1
suse-csafSUSE-SU-2016:0340-1
usnUSN-2882-1
🔗

References & Sources

17
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://curl.haxx.se/docs/adv_20160127A.htmlVendor Advisory
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
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