CVE-2018-16890
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-16890
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-16890.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-9
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-13
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-12
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-11
Vendor advisory: arch — https://security.archlinux.org/ASA-201902-10
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 7.64.0-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 7.64.0-1 |
| debian | bullseye | fixed | 7.64.0-1 |
| debian | forky | fixed | 7.64.0-1 |
| debian | sid | fixed | 7.64.0-1 |
| debian | trixie | fixed | 7.64.0-1 |
References
- https://security.archlinux.org/ASA-201902-10
- https://security.archlinux.org/ASA-201902-11
- https://security.archlinux.org/ASA-201902-12
- https://security.archlinux.org/ASA-201902-13
- https://security.archlinux.org/ASA-201902-9
- https://www.suse.com/security/cve/CVE-2018-16890.html
- https://security-tracker.debian.org/tracker/CVE-2018-16890
Verify integrity in audit chain (admin only). AS-IS.