CVE-2018-16890

moderate-risk
Published 2019-02-06

libcurl versions from 7.36.0 to before 7.64.0 is vulnerable to a heap buffer out-of-bounds read. The function handling incoming NTLM type-2 messages (`lib/vauth/ntlm.c:ntlm_decode_type2_target`) does not validate incoming data correctly and is subject to an integer overflow vulnerability. Using that overflow, a malicious or broken NTLM server could trick libcurl to accept a bad length + offset combination that would lead to a buffer read out-of-bounds.

Do I need to act?

~
1.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (14)

Sinema Remote Connect Client

Affected Vendors

Debian Redhat Oracle Siemens F5 Canonical Haxx Netapp

References (24)

Third Party Advisory http://www.securityfocus.com/bid/106947
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:3701
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16890
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf
Patch https://curl.haxx.se/docs/CVE-2018-16890.html
https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37f...
Patch https://security.netapp.com/advisory/ntap-20190315-0001/
https://support.f5.com/csp/article/K03314397?utm_source=f5support&amp%3Butm_medi...
Third Party Advisory https://usn.ubuntu.com/3882-1/
Third Party Advisory https://www.debian.org/security/2019/dsa-4386
Patch https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
Patch https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Third Party Advisory http://www.securityfocus.com/bid/106947
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:3701
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16890
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf
Patch https://curl.haxx.se/docs/CVE-2018-16890.html
https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37f...
Patch https://security.netapp.com/advisory/ntap-20190315-0001/
https://support.f5.com/csp/article/K03314397?utm_source=f5support&amp%3Butm_medi...
and 4 more references
48
/ 100
moderate-risk
Severity 26/34 · High
Exploitability 4/34 · Minimal
Exposure 18/34 · Moderate