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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0531 squid3 security update 23 February 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: squid3 Publisher: Debian Operating System: Debian GNU/Linux 8 Debian GNU/Linux 9 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-1000027 CVE-2018-1000024 Reference: ESB-2018.0347 Original Bulletin: http://www.debian.org/security/2018/dsa-4122 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-4122-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso February 23, 2018 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : squid3 CVE ID : CVE-2018-1000024 CVE-2018-1000027 Debian Bug : 888719 888720 Several vulnerabilities have been discovered in Squid3, a fully featured web proxy cache. The Common Vulnerabilities and Exposures project identifies the following issues: CVE-2018-1000024 Louis Dion-Marcil discovered that Squid does not properly handle processing of certain ESI responses. A remote server delivering certain ESI response syntax can take advantage of this flaw to cause a denial of service for all clients accessing the Squid service. This problem is limited to the Squid custom ESI parser. http://www.squid-cache.org/Advisories/SQUID-2018_1.txt CVE-2018-1000027 Louis Dion-Marcil discovered that Squid is prone to a denial of service vulnerability when processing ESI responses or downloading intermediate CA certificates. A remote attacker can take advantage of this flaw to cause a denial of service for all clients accessing the Squid service. http://www.squid-cache.org/Advisories/SQUID-2018_2.txt For the oldstable distribution (jessie), these problems have been fixed in version 3.4.8-6+deb8u5. For the stable distribution (stretch), these problems have been fixed in version 3.5.23-5+deb9u1. We recommend that you upgrade your squid3 packages. For the detailed security status of squid3 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/squid3 Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org - -----BEGIN PGP SIGNATURE----- iQKTBAEBCgB9FiEERkRAmAjBceBVMd3uBUy48xNDz0QFAlqPVb9fFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldDQ2 NDQ0MDk4MDhDMTcxRTA1NTMxRERFRTA1NENCOEYzMTM0M0NGNDQACgkQBUy48xND z0RGOw//Yr5/j5S5xNQEM7HI+6mBcPEczGMFgUxYas9lQpaNlcD8Rxx+5sozlya7 pCr+SB0IcPfKzdB+1DhpmHUBr+AsAA6OHyf7xtgG0dPAq5SX+sHz1CbO3110k8j+ rdUotCf+xhLQ+2q8Cbi9YfQd5EPpdtzx/8cXVQomTcXt2nmHIlk91rNOZs0/gg2D WAAaeV3SEcR8mzLfWRqUSqSutdCGboOSbhHl7zeTdm9cPAYXrbRBmjjAisxcMSdy 1PeHmaoqlp1/dwMWUWu4qXeT2yT92BFjhj1dHvUlpbdJtvvRohD3WjORBIBe9Gc+ eWxKrpVR4d9lyb8ipsf2nt+/b+v5jkvrg9W3yL0HEKjPa54wr92kGArb948A3vPJ YWbomuwhhKW0DIqI1nES9R2XzZZgFo1DZpXmchYqM+sC2e8+rUBmfn9MUVOWG/9U X5JMhKiNHpIYTf9bKSqc4OSbtL+nJ5uY2g6+HrElwI/319CPxxdfr9iplP10ITVX ofjZecqjT24Nfra5ZvN6Pscpg9E34xgpd9fzOPgB7bq3BemYDT2GDaB/o3TXsVTO 4j84gg+9b68PICJgqsRdFAuiseycRZbXnzdvbBWB0mcKileFUIyZn+o9v4TQzWt+ +6Ebi7CpnEAttJ2Cyhw32B3XUuLQoBy/CWdruaFrEJu/EMr/ZxU= =mMK9 - -----END PGP SIGNATURE----- - --------------------------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. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. 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 iQIVAwUBWo99dox+lLeg9Ub1AQhLwRAAkBz0WJ3EDCAfN8xJhIUtD4hpD6dHDuPq CAY/bLi8PJ0T/tYFs+XV5EQejGudXHm2nfkEzFEkTCOomB3+QhBPkFuwaIIK+Vh8 DoVC7dKewsl95IUw6NoW4eIayZLE/Mrl1jmJKm2UGN1rYf1weRpVd6MN6JIeyZqQ J+0v/O8sf9w4gGex4rv36T1wIODlj+rU+Xq1appm0mVT0IMQXKOzpwBYEzq48hGm 6yj5KMJZ1P5bNCO0MGfetb61pCG9K7YMQXs26zXpkDHrcON+JdCl3z0fBdJ5vf9x 7hSRFRRATocVuGDHtFfMuk1hincg3qfBjuKIyAk1IHHsKE3ZENjWzcLbY63jAHNA Rvi+m7hU3MyANllcjPMi2e6BC7Odu/N/xPGpo5yYAu9ri4RDEYNz8TFasUSf7vJV W0opzoF8XqjLpc9LwSDWMkj3Ybk4iSDHiFGXOrDtDdLR1upMgLLleFjP5UHzCrPG VLeOSd1iVHUCpDQNn3/CFq0jSQ41QwkB5fWCAul4EdCl5znrmVRH//jaEoK4DIKh orft2ekh4XaocKm3zqlp5Wpd7f8Qccv/j2W05L8MctsEuw2XbHnVWkdfIGstPE5y FaTqS6PEW9Qu9XM4iDe10bgsaz6AUqXK2w50pRlWE5QhymnpaplqV8wX3EQtthim WLNLOiDcNno= =DySF -----END PGP SIGNATURE-----