Security update for squid SUSE Patch security@suse.de SUSE Security Team SUSE-SU-2020:1227-1 Final 1 1 2020-05-08T12:14:02Z current 2020-05-08T12:14:02Z 2020-05-08T12:14:02Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for squid This update for squid fixes the following issues: - CVE-2019-12519, CVE-2019-12521: fixes incorrect buffer handling that can result in cache poisoning, remote execution, and denial of service attacks when processing ESI responses (bsc#1169659). - CVE-2020-11945: fixes a potential remote execution vulnerability when using HTTP Digest Authentication (bsc#1170313). - CVE-2019-12520, CVE-2019-12524: fixes a potential ACL bypass, cache-bypass and cross-site scripting attack when processing invalid HTTP Request messages (bsc#1170423). The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). HPE-Helion-OpenStack-8-2020-1227,SUSE-2020-1227,SUSE-OpenStack-Cloud-7-2020-1227,SUSE-OpenStack-Cloud-8-2020-1227,SUSE-OpenStack-Cloud-Crowbar-8-2020-1227,SUSE-SLE-SAP-12-SP2-2020-1227,SUSE-SLE-SAP-12-SP3-2020-1227,SUSE-SLE-SERVER-12-SP2-2020-1227,SUSE-SLE-SERVER-12-SP2-BCL-2020-1227,SUSE-SLE-SERVER-12-SP3-2020-1227,SUSE-SLE-SERVER-12-SP3-BCL-2020-1227,SUSE-SLE-SERVER-12-SP4-2020-1227,SUSE-Storage-5-2020-1227 Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ Link for SUSE-SU-2020:1227-1 https://lists.suse.com/pipermail/sle-security-updates/2020-May/006808.html E-Mail link for SUSE-SU-2020:1227-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings https://bugzilla.suse.com/1169659 SUSE Bug 1169659 https://bugzilla.suse.com/1170313 SUSE Bug 1170313 https://bugzilla.suse.com/1170423 SUSE Bug 1170423 https://www.suse.com/security/cve/CVE-2019-12519/ SUSE CVE CVE-2019-12519 page https://www.suse.com/security/cve/CVE-2019-12520/ SUSE CVE CVE-2019-12520 page https://www.suse.com/security/cve/CVE-2019-12521/ SUSE CVE CVE-2019-12521 page https://www.suse.com/security/cve/CVE-2019-12524/ SUSE CVE CVE-2019-12524 page https://www.suse.com/security/cve/CVE-2020-11945/ SUSE CVE CVE-2020-11945 page HPE Helion OpenStack 8 SUSE Enterprise Storage 5 SUSE Linux Enterprise Server 12 SP2-BCL SUSE Linux Enterprise Server 12 SP2-LTSS SUSE Linux Enterprise Server 12 SP3-BCL SUSE Linux Enterprise Server 12 SP3-LTSS SUSE Linux Enterprise Server 12 SP4 SUSE Linux Enterprise Server for SAP Applications 12 SP2 SUSE Linux Enterprise Server for SAP Applications 12 SP3 SUSE Linux Enterprise Server for SAP Applications 12 SP4 SUSE OpenStack Cloud 7 SUSE OpenStack Cloud 8 SUSE OpenStack Cloud Crowbar 8 squid-3.5.21-26.23.1 squid-3.5.21-26.23.1 as a component of HPE Helion OpenStack 8 squid-3.5.21-26.23.1 as a component of SUSE Enterprise Storage 5 squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server 12 SP2-BCL squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server 12 SP2-LTSS squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server 12 SP3-BCL squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server 12 SP3-LTSS squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server 12 SP4 squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP2 squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP3 squid-3.5.21-26.23.1 as a component of SUSE Linux Enterprise Server for SAP Applications 12 SP4 squid-3.5.21-26.23.1 as a component of SUSE OpenStack Cloud 7 squid-3.5.21-26.23.1 as a component of SUSE OpenStack Cloud 8 squid-3.5.21-26.23.1 as a component of SUSE OpenStack Cloud Crowbar 8 An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow. CVE-2019-12519 HPE Helion OpenStack 8:squid-3.5.21-26.23.1 SUSE Enterprise Storage 5:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP4:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 7:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 8:squid-3.5.21-26.23.1 SUSE OpenStack Cloud Crowbar 8:squid-3.5.21-26.23.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ https://www.suse.com/security/cve/CVE-2019-12519.html CVE-2019-12519 https://bugzilla.suse.com/1169659 SUSE Bug 1169659 An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI. CVE-2019-12520 HPE Helion OpenStack 8:squid-3.5.21-26.23.1 SUSE Enterprise Storage 5:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP4:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 7:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 8:squid-3.5.21-26.23.1 SUSE OpenStack Cloud Crowbar 8:squid-3.5.21-26.23.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ https://www.suse.com/security/cve/CVE-2019-12520.html CVE-2019-12520 https://bugzilla.suse.com/1169666 SUSE Bug 1169666 https://bugzilla.suse.com/1170423 SUSE Bug 1170423 An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing. CVE-2019-12521 HPE Helion OpenStack 8:squid-3.5.21-26.23.1 SUSE Enterprise Storage 5:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP4:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 7:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 8:squid-3.5.21-26.23.1 SUSE OpenStack Cloud Crowbar 8:squid-3.5.21-26.23.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ https://www.suse.com/security/cve/CVE-2019-12521.html CVE-2019-12521 https://bugzilla.suse.com/1169659 SUSE Bug 1169659 An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource. CVE-2019-12524 HPE Helion OpenStack 8:squid-3.5.21-26.23.1 SUSE Enterprise Storage 5:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP4:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 7:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 8:squid-3.5.21-26.23.1 SUSE OpenStack Cloud Crowbar 8:squid-3.5.21-26.23.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ https://www.suse.com/security/cve/CVE-2019-12524.html CVE-2019-12524 https://bugzilla.suse.com/1169666 SUSE Bug 1169666 https://bugzilla.suse.com/1170423 SUSE Bug 1170423 An issue was discovered in Squid before 5.0.2. A remote attacker can replay a sniffed Digest Authentication nonce to gain access to resources that are otherwise forbidden. This occurs because the attacker can overflow the nonce reference counter (a short integer). Remote code execution may occur if the pooled token credentials are freed (instead of replayed as valid credentials). CVE-2020-11945 HPE Helion OpenStack 8:squid-3.5.21-26.23.1 SUSE Enterprise Storage 5:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP2-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-BCL:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP3-LTSS:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server 12 SP4:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP2:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP3:squid-3.5.21-26.23.1 SUSE Linux Enterprise Server for SAP Applications 12 SP4:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 7:squid-3.5.21-26.23.1 SUSE OpenStack Cloud 8:squid-3.5.21-26.23.1 SUSE OpenStack Cloud Crowbar 8:squid-3.5.21-26.23.1 important To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". https://www.suse.com/support/update/announcement/2020/suse-su-20201227-1/ https://www.suse.com/security/cve/CVE-2020-11945.html CVE-2020-11945 https://bugzilla.suse.com/1170313 SUSE Bug 1170313