Security update for curl SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2019:0173-1 Final 1 1 2019-02-14T09:03:14Z current 2019-02-14T09:03:14Z 2019-02-14T09:03:14Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for curl This update for curl fixes the following issues: Security issues fixed: - CVE-2019-3823: Fixed a heap out-of-bounds read in the code handling the end-of-response for SMTP (bsc#1123378). - CVE-2019-3822: Fixed a stack based buffer overflow in the function creating an outgoing NTLM type-3 message (bsc#1123377). - CVE-2018-16890: Fixed a heap buffer out-of-bounds read in the function handling incoming NTLM type-2 messages (bsc#1123371). This update was imported from the SUSE:SLE-12:Update update project. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-security-announce/2019-02/msg00022.html E-Mail link for openSUSE-SU-2019:0173-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.3 curl-7.37.0-45.1 libcurl-devel-7.37.0-45.1 libcurl-devel-32bit-7.37.0-45.1 libcurl4-7.37.0-45.1 libcurl4-32bit-7.37.0-45.1 curl-7.37.0-45.1 as a component of openSUSE Leap 42.3 libcurl-devel-7.37.0-45.1 as a component of openSUSE Leap 42.3 libcurl-devel-32bit-7.37.0-45.1 as a component of openSUSE Leap 42.3 libcurl4-7.37.0-45.1 as a component of openSUSE Leap 42.3 libcurl4-32bit-7.37.0-45.1 as a component of openSUSE Leap 42.3 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. CVE-2018-16890 openSUSE Leap 42.3:curl-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-7.37.0-45.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2019-02/msg00022.html https://www.suse.com/security/cve/CVE-2018-16890.html CVE-2018-16890 https://bugzilla.suse.com/1123371 SUSE Bug 1123371 https://bugzilla.suse.com/1123378 SUSE Bug 1123378 https://bugzilla.suse.com/1141798 SUSE Bug 1141798 libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an outgoing NTLM type-3 header (`lib/vauth/ntlm.c:Curl_auth_create_ntlm_type3_message()`), generates the request HTTP header contents based on previously received data. The check that exists to prevent the local buffer from getting overflowed is implemented wrongly (using unsigned math) and as such it does not prevent the overflow from happening. This output data can grow larger than the local buffer if very large 'nt response' data is extracted from a previous NTLMv2 header provided by the malicious or broken HTTP server. Such a 'large value' needs to be around 1000 bytes or more. The actual payload data copied to the target buffer comes from the NTLMv2 type-2 response header. CVE-2019-3822 openSUSE Leap 42.3:curl-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-7.37.0-45.1 important Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2019-02/msg00022.html https://www.suse.com/security/cve/CVE-2019-3822.html CVE-2019-3822 https://bugzilla.suse.com/1123377 SUSE Bug 1123377 https://bugzilla.suse.com/1141798 SUSE Bug 1141798 libcurl versions from 7.34.0 to before 7.64.0 are vulnerable to a heap out-of-bounds read in the code handling the end-of-response for SMTP. If the buffer passed to `smtp_endofresp()` isn't NUL terminated and contains no character ending the parsed number, and `len` is set to 5, then the `strtol()` call reads beyond the allocated buffer. The read contents will not be returned to the caller. CVE-2019-3823 openSUSE Leap 42.3:curl-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl-devel-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-32bit-7.37.0-45.1 openSUSE Leap 42.3:libcurl4-7.37.0-45.1 moderate Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2019-02/msg00022.html https://www.suse.com/security/cve/CVE-2019-3823.html CVE-2019-3823 https://bugzilla.suse.com/1123378 SUSE Bug 1123378 https://bugzilla.suse.com/1126909 SUSE Bug 1126909 https://bugzilla.suse.com/1141798 SUSE Bug 1141798