Vulnerability CVE-2018-16890


Published: 2019-02-06

Description:
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.

Type:

CWE-125

(Out-of-bounds Read)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Siemens -> Sinema remote connect client 
Oracle -> Communications operations monitor 
Oracle -> Http server 
Oracle -> Secure global desktop 
Netapp -> Clustered data ontap 
HAXX -> Libcurl 
Debian -> Debian linux 
Canonical -> Ubuntu linux 

 References:
http://www.securityfocus.com/bid/106947
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16890
https://cert-portal.siemens.com/productcert/pdf/ssa-436177.pdf
https://curl.haxx.se/docs/CVE-2018-16890.html
https://lists.apache.org/thread.html/8338a0f605bdbb3a6098bb76f666a95fc2b2f53f37fa1ecc89f1146f@%3Cdevnull.infra.apache.org%3E
https://security.netapp.com/advisory/ntap-20190315-0001/
https://usn.ubuntu.com/3882-1/
https://www.debian.org/security/2019/dsa-4386
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html

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