Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2431 USN-5423-2: ClamAV vulnerabilities 18 May 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ClamAV Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2022-20796 CVE-2022-20792 CVE-2022-20785 CVE-2022-20771 CVE-2022-20770 Original Bulletin: https://ubuntu.com/security/notices/USN-5423-2 Comment: CVSS (Max): 7.8 CVE-2022-20792 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) CVSS Source: NVD, [SUSE] Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5423-2: ClamAV vulnerabilities 17 May 2022 Several security issues were fixed in ClamAV. Releases o Ubuntu 16.04 ESM o Ubuntu 14.04 ESM Packages o clamav - Anti-virus utility for Unix Details USN-5423-1 fixed several vulnerabilities in ClamAV. This update provides the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM. Original advisory details: Michal Dardas discovered that ClamAV incorrectly handled parsing CHM files. A remote attacker could possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service. ( CVE-2022-20770 ) Michal Dardas discovered that ClamAV incorrectly handled parsing TIFF files. A remote attacker could possibly use this issue to cause ClamAV to stop responding, resulting in a denial of service. ( CVE-2022-20771 ) Michal Dardas discovered that ClamAV incorrectly handled parsing HTML files. A remote attacker could possibly use this issue to cause ClamAV to consume resources, resulting in a denial of service. ( CVE-2022-20785 ) Michal Dardas discovered that ClamAV incorrectly handled loading the signature database. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code. ( CVE-2022-20792 ) Alexander Patrakov and Antoine Gatineau discovered that ClamAV incorrectly handled the scan verdict cache check. A remote attacker could possibly use this issue to cause ClamAV to crash, resulting in a denial of service, or possibly execute arbitrary code.( CVE-2022-20796 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 o clamav - 0.103.6+dfsg-0ubuntu0.16.04.1+esm1 Available with UA Infra or UA Desktop Ubuntu 14.04 o clamav - 0.103.6+dfsg-0ubuntu0.14.04.1+esm1 Available with UA Infra or UA Desktop This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes. References o CVE-2022-20771 o CVE-2022-20796 o CVE-2022-20785 o CVE-2022-20792 o CVE-2022-20770 Related notices o USN-5423-1 : clamav-testfiles, clamav, libclamav-dev, clamav-daemon, clamav-freshclam, clamav-docs, clamav-milter, clamav-base, libclamav9, clamdscan - --------------------------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: https://auscert.org.au/gpg-key/ iQIVAwUBYoRpuMkNZI30y1K9AQhFKw//dZ6DDD/0F7l1Utm3yMjGmOK0mq7V7eKj f/7ZLFo9pr5e9iVEURMOmDYDY+goa0RpWoe88kwwDQ+HUSMKJYT0v7uxJ0P2LGbp J+/ls/b+rKr/PH1FtNwlbbVAwFuPoTOhupt6h+rg4s7luqZRysjURsustAJhc3Zg 4M8ufMYRXuzaj5DIjAwEsvU1EQDR5wj605dYad98H9xLP2SLIzwYxjmNzo7SzC6m aKnpYX8QI/V3hCebk3iJ9B7tpixjZy40+EEa0csjVMpPAz3KmFcXpT4Q81DczjDo YPKivuiA/o7PFpbFAPek1F8ZJMjzQq1PZUQG7noxFk92KLzqfSbrKaTFS0n2qsT1 0qPxOp3aCMVuY1O/WBQYIx18vD15o40cBfttqYtZI8HCHuxyVcofAweE1WwZ7WPE l6W05LmM1yWP/dDqsYPQZGqzM13Gyy95o/WllbxYrGrL8bzMg4+egwvnYiMC0McL y3ivH/hIIUtRKWR3nQz3bJiAIR9T+7T93YWH9vqC0/LK7ml5pwKL9BHCxD30SzB/ 5QyxRR0k2vCbVCr7AS3M+CHQvUEMtj5+ja48CmfDa4F6oROL+7CaYXtv3DSkHW11 Q4DxDAe80B+L+au/0GGG4HA+X3TTG3enAQCiRG0ujV4okjRRHjC3Dq7U6BB3t3ts f0cBpAnwGv8= =lM/j -----END PGP SIGNATURE-----