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CVE-2018-16890

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2019-3701-01
Posted Nov 6, 2019
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2019-3701-01 - The curl packages provide the libcurl library and the curl utility for downloading files from servers using various protocols, including HTTP, FTP, and LDAP. Issues addressed include a buffer overflow vulnerability.

tags | advisory, web, overflow, protocol
systems | linux, redhat
advisories | CVE-2018-16890, CVE-2018-20483, CVE-2019-3822, CVE-2019-3823
MD5 | 455709ca8c7afa5600951eaadbe8896d
Slackware Security Advisory - curl Updates
Posted Feb 7, 2019
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New curl packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues.

tags | advisory
systems | linux, slackware
advisories | CVE-2018-16890, CVE-2019-3822, CVE-2019-3823
MD5 | 94a3f99ebf000e845519b576af5096b3
Debian Security Advisory 4386-1
Posted Feb 7, 2019
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4386-1 - Multiple vulnerabilities were discovered in cURL, an URL transfer library.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2018-16890, CVE-2019-3822, CVE-2019-3823
MD5 | 0b5291ca75b37da8828dd930b9951035
Ubuntu Security Notice USN-3882-1
Posted Feb 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3882-1 - Wenxiang Qian discovered that curl incorrectly handled certain NTLM authentication messages. A remote attacker could possibly use this issue to cause curl to crash, resulting in a denial of service. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. Wenxiang Qian discovered that curl incorrectly handled certain NTLMv2 authentication messages. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2018-16890, CVE-2019-3822, CVE-2019-3823
MD5 | 0f925b1c5398dda61353888f8f8f00b0
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