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             AUSCERT External Security Bulletin Redistribution

                         Security update for squid
                                4 June 2021


        AusCERT Security Bulletin Summary

Product:           squid
Publisher:         SUSE
Operating System:  SUSE
Impact/Access:     Denial of Service        -- Remote with User Interaction
                   Access Confidential Data -- Remote/Unauthenticated      
                   Unauthorised Access      -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-31806 CVE-2021-28662 CVE-2021-28652
                   CVE-2021-28651 CVE-2020-25097 

Reference:         ESB-2021.1894

Original Bulletin: 

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TITLE: Security update for squid
URL:   https://www.suse.com/support/update/announcement/2021/suse-su-20211838-1

Found CVEs: CVE-2020-25097 CVE-2021-28651 CVE-2021-28652
            CVE-2021-28662 CVE-2021-31806

CVSSv3 base score: 8.6
CVSSv2 base score: 5.0
Source: https://nvd.nist.gov/vuln/detail/CVE-2020-25097/
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to
improper input validation, it allows a trusted client to perform HTTP Request
Smuggling and access services otherwise forbidden by the security controls. This
occurs for certain uri_whitespace configuration settings.

Source: https://nvd.nist.gov/vuln/detail/CVE-2021-28651/
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a
buffer-management bug, it allows a denial of service. When resolving a request
with the urn: scheme, the parser leaks a small amount of memory. However, there
is an unspecified attack methodology that can easily trigger a large amount of
memory consumption.

Source: https://nvd.nist.gov/vuln/detail/CVE-2021-28652/
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to
incorrect parser validation, it allows a Denial of Service attack against the
Cache Manager API. This allows a trusted client to trigger memory leaks that.
over time, lead to a Denial of Service via an unspecified short query string.
This attack is limited to clients with Cache Manager API access privilege.

SUSE Security Update: Security update for squid


Announcement ID:   SUSE-SU-2021:1838-1
Rating:            important
References:        #1171164 #1171569 #1183436 #1185916 #1185918 #1185919
                   #1185921 #1185923
Cross-References:  CVE-2020-25097 CVE-2021-28651 CVE-2021-28652 CVE-2021-28662
Affected Products:
                   SUSE Linux Enterprise Server 12-SP5

An update that solves 5 vulnerabilities and has three fixes is now available.


This update for squid fixes the following issues:

  o update to 4.15:
  o CVE-2021-28652: Broken cache manager URL parsing (bsc#1185918)
  o CVE-2021-28651: Memory leak in RFC 2169 response parsing (bsc#1185921)
  o CVE-2021-28662: Limit HeaderLookupTable_t::lookup() to BadHdr and specific
    IDs (bsc#1185919)
  o CVE-2021-31806: Handle more Range requests (bsc#1185916)
  o CVE-2020-25097: HTTP Request Smuggling vulnerability (bsc#1183436)
  o Handle more partial responses (bsc#1185923)
  o fix previous change to reinstante permissions macros, because the wrong
    path has been used (bsc#1171569).
  o use libexecdir instead of libdir to conform to recent changes in Factory
  o Reinstate permissions macros for pinger binary, because the permissions
    package is also responsible for setting up the cap_net_raw capability,
    currently a fresh squid install doesn't get a capability bit at all (bsc#
  o Change pinger and basic_pam_auth helper to use standard permissions. pinger
    uses cap_net_raw=ep instead (bsc#1171569)

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation
methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  o SUSE Linux Enterprise Server 12-SP5:
    zypper in -t patch SUSE-SLE-SERVER-12-SP5-2021-1838=1

Package List:

  o SUSE Linux Enterprise Server 12-SP5 (aarch64 ppc64le s390x x86_64):


  o https://www.suse.com/security/cve/CVE-2020-25097.html
  o https://www.suse.com/security/cve/CVE-2021-28651.html
  o https://www.suse.com/security/cve/CVE-2021-28652.html
  o https://www.suse.com/security/cve/CVE-2021-28662.html
  o https://www.suse.com/security/cve/CVE-2021-31806.html
  o https://bugzilla.suse.com/1171164
  o https://bugzilla.suse.com/1171569
  o https://bugzilla.suse.com/1183436
  o https://bugzilla.suse.com/1185916
  o https://bugzilla.suse.com/1185918
  o https://bugzilla.suse.com/1185919
  o https://bugzilla.suse.com/1185921
  o https://bugzilla.suse.com/1185923

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