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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1077 USN-4895-1: Squid vulnerabilities 30 March 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Squid Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Provide Misleading Information -- Existing Account Access Confidential Data -- Existing Account Unauthorised Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-25097 CVE-2020-15049 Reference: ESB-2021.0996 ESB-2020.3871 ESB-2020.3333 Original Bulletin: https://ubuntu.com/security/notices/USN-4895-1 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4895-1: Squid vulnerabilities 29 March 2021 Several security issues were fixed in Squid. Releases o Ubuntu 20.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS Packages o squid - Web proxy cache server o squid3 - Web proxy cache server Details Alex Rousskov and Amit Klein discovered that Squid incorrectly handled certain Content-Length headers. A remote attacker could possibly use this issue to perform an HTTP request smuggling attack, resulting in cache poisoning. This issue only affected Ubuntu 20.04 LTS. ( CVE-2020-15049 ) Jianjun Chen discovered that Squid incorrectly validated certain input. A remote attacker could use this issue to perform HTTP Request Smuggling and possibly access services forbidden by the security controls. ( CVE-2020-25097 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.10 o squid - 4.13-1ubuntu2.1 Ubuntu 20.04 o squid - 4.10-1ubuntu1.3 Ubuntu 18.04 o squid - 3.5.27-1ubuntu1.10 Ubuntu 16.04 o squid - 3.5.12-1ubuntu7.16 In general, a standard system update will make all the necessary changes. References o CVE-2020-25097 o CVE-2020-15049 Related notices o USN-4551-1 : squid3, squid - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBYGJj4+NLKJtyKPYoAQiKLg//VLPipQIyEEk6KTe/gAwm887r5CX9P7Yh eU7AxycmVVfU7CkldAnfJbrGAG9ZIb7GidJX2cFEAygixRGENDtCKaN3TSMM1ae9 AoEZerGUEIYZnl8+EowaT2y1NcNiLRGoNMNENTOBLQv/SaYXMWTfnEfD1Wyn+Wfr NSykBA6c6U4PsSZjM0W85vCe2NkH2Nxwsnlj7xejPPSpJYmruaLd+XvCNPRzmbvd D9meiDhREjyOk80WdF52hmcavnvPWduJnhwcl2yjoCr0Cdr0JDKBKR82GRSG6yVW 9UFwfcZlXPet1mqT3EUCImIpNTTzUxhPE6snyFvRkAYocWrarfYKl+C426+fiduW n4eGv9PbTicchaPMh1mAa2bOUIp2DIzpWv5Ok6K2ikgqhnMJpBN0xtGsqFyqpLU3 1UdeE1E8C5oe3A7E+rD0PVtp4Hp3ebDGla4Ymh3MFcw2Wg79GbFjSHUrZ3By9MM6 D5pFlLpLCWMyFGK7GNaOPxuPg6cCJC0j8/B/bbJixbdLzMxnWl80oNIo2b/9cydP jk84tDXCUOEHDg4hLhAptV1CyaWG8d409HlI0ZnInT3u4maNm3w4PBmMbTuDFKQM Fn9sGYHekcHiZx06VPIW0/i7vt+O/KStlf6qpYcsyFyZk8FBN+WxlqyVSxhbdVLF m+5TTwf3JY4= =uxrL -----END PGP SIGNATURE-----