Security update for wget SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2017:2884-1 Final 1 1 2017-10-27T18:46:08Z current 2017-10-27T18:46:08Z 2017-10-27T18:46:08Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for wget This update for wget fixes the following security issues: - CVE-2017-13089,CVE-2017-13090: Missing checks for negative remaining_chunk_size in skip_short_body and fd_read_body could cause stack buffer overflows, which could have been exploited by malicious servers. (bsc#1064715,bsc#1064716) 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/2017-10/msg00081.html E-Mail link for openSUSE-SU-2017:2884-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.2 openSUSE Leap 42.3 wget-1.14-12.1 wget-1.14-12.1 as a component of openSUSE Leap 42.2 wget-1.14-12.1 as a component of openSUSE Leap 42.3 The http.c:skip_short_body() function is called in some circumstances, such as when processing redirects. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to skip the chunk in pieces of 512 bytes by using the MIN() macro, but ends up passing the negative chunk length to connect.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument. CVE-2017-13089 openSUSE Leap 42.2:wget-1.14-12.1 openSUSE Leap 42.3:wget-1.14-12.1 important 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-10/msg00081.html https://www.suse.com/security/cve/CVE-2017-13089.html CVE-2017-13089 https://bugzilla.suse.com/1064715 SUSE Bug 1064715 The retr.c:fd_read_body() function is called when processing OK responses. When the response is sent chunked in wget before 1.19.2, the chunk parser uses strtol() to read each chunk's length, but doesn't check that the chunk length is a non-negative number. The code then tries to read the chunk in pieces of 8192 bytes by using the MIN() macro, but ends up passing the negative chunk length to retr.c:fd_read(). As fd_read() takes an int argument, the high 32 bits of the chunk length are discarded, leaving fd_read() with a completely attacker controlled length argument. The attacker can corrupt malloc metadata after the allocated buffer. CVE-2017-13090 openSUSE Leap 42.2:wget-1.14-12.1 openSUSE Leap 42.3:wget-1.14-12.1 important 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C Please Install the update. https://lists.opensuse.org/opensuse-security-announce/2017-10/msg00081.html https://www.suse.com/security/cve/CVE-2017-13090.html CVE-2017-13090 https://bugzilla.suse.com/1064716 SUSE Bug 1064716