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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2430 USN-5425-1: PCRE vulnerabilities 18 May 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: PCRE Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2020-14155 CVE-2019-20838 CVE-2019-20454 Original Bulletin: https://ubuntu.com/security/notices/USN-5425-1 Comment: CVSS (Max): 7.5 CVE-2019-20838 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: NVD Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5425-1: PCRE vulnerabilities 17 May 2022 Several security issues were fixed in PCRE. Releases o Ubuntu 22.04 LTS o Ubuntu 21.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS o Ubuntu 16.04 ESM o Ubuntu 14.04 ESM Packages o pcre3 - Perl 5 Compatible Regular Expression Library Details Yunho Kim discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications using PCRE to expose sensitive information. This issue only affects Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 21.10 and Ubuntu 22.04 LTS. ( CVE-2019-20838 ) It was discovered that PCRE incorrectly handled memory when handling certain regular expressions. An attacker could possibly use this issue to cause applications using PCRE to have unexpected behavior. This issue only affects Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2020-14155 ) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 o libpcre3 - 2:8.39-13ubuntu0.22.04.1 Ubuntu 21.10 o libpcre3 - 2:8.39-13ubuntu0.21.10.1 Ubuntu 20.04 o libpcre3 - 2:8.39-12ubuntu0.1 Ubuntu 18.04 o libpcre3 - 2:8.39-9ubuntu0.1 Ubuntu 16.04 o libpcre3 - 2:8.38-3.1ubuntu0.1~esm1 Available with UA Infra or UA Desktop Ubuntu 14.04 o libpcre3 - 1:8.31-2ubuntu2.3+esm1 Available with UA Infra or UA Desktop After a standard system update you need to restart applications using PCRE, such as the Apache HTTP server and Nginx, to make all the necessary changes. References o CVE-2020-14155 o CVE-2019-20838 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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/ iQIVAwUBYoRpi8kNZI30y1K9AQhwGBAAlJVijJ1AW4oKibDhSJ8a4z4okP9I84iJ mccpKw6AHPB6GM7Vvh2eCdb/TCTUKlBdzU0cDwAOYMRC2z3e8xbsIOM+thrNsJ7z KV7v66ttpsa/j46Ltws++iKinMRNhJFImkcUZ3MIggB33LGk3UkX3wglhj0ocqzQ IkIwYnZ91e2/gQoxtCz4ITdVfDWFLNyJA3rTE3iclqOAHrnmlwf9eaRWqje/ORwr rGohurMeeCqKFs/Lhgm4ZibTlnOkPxBklphJW8WO2vqpBXQ+3viGVtVsCW7MFA6X uaqXNWffOsfFceVbJFoDUNwddOTAXwaA2MMd6fcj6vF+mv4a1vaDaeGry+694WXe N8pUauZR0LneljDopiPNmvf8TAXoxYPZuLrE3IMY3wPYTkFw/ZKK84v5UJWyjHNI WWU+UgdowZvtFfH+6Yb+9jYqG2qaJp2fVoGbQzA6opYHKW/1Ero/jILRW/EFo7Di k5qw93e9kOOSzukEyfzmYuxv20386591+d7AKkSmAWrReTfbn78RkPqzjEx1EQZg KWcfsYDJKUiiFhrLKdah+fA4c/rVGS5OdRKKg7n+4E+sqRsN6PyIcbeQ+E9k06Bi iJnRHd3gOn/IqWzuI+WpeXnQLPk4qRF38sXnKR2aqyX/YmrL5bopOwjogczu8mdB 7CSngtE7twM= =XDGI -----END PGP SIGNATURE-----