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These are the Ubuntu security notices that affect the current supported releases of Ubuntu. These notices are also posted to the ubuntu-security-announce mailing list (list archive). To report a security vulnerability in an Ubuntu package, please contact the Ubuntu Security Team. You may also be interested in learning about Ubuntu security policies. For more details on a specific CVE or source package, please see the Ubuntu CVE Tracker.

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Latest notices

USN-4338-1: re2c vulnerability

Agostino Sarubbo discovered that re2c incorrectly handled certain files. An attacker could possibly use this issue to execute arbitrary code.

22 April 2020 | ubuntu-19.10

USN-4337-1: OpenJDK vulnerabilities

It was discovered that OpenJDK incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause a denial of service while processing a specially crafted regular expression. (CVE-2020-2754, CVE-2020-2755) It was discovered that OpenJDK incorrectly handled class descriptors and catching exceptions during object…

22 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts

USN-4336-1: GNU binutils vulnerabilities

It was discovered that GNU binutils contained a large number of security issues. If a user or automated system were tricked into processing a specially-crafted file, a remote attacker could cause GNU binutils to crash, resulting in a denial of service, or possibly execute arbitrary code.

22 April 2020 | ubuntu-18.04-lts

USN-4335-1: Thunderbird vulnerabilities

Multiple security issues were discovered in Thunderbird. If a user were tricked in to opening a specially crafted website in a browsing context, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information, bypass security restrictions, bypass same-origin restrictions, conduct cross-site scripting (XSS)…

21 April 2020 | ubuntu-16.04-lts

USN-4333-1: Python vulnerabilities

It was discovered that Python incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. (CVE-2019-18348) It was discovered that Python incorrectly handled certain HTTP requests. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-8492)

21 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts, ubuntu-14.04-esm, ubuntu-12.04-esm

USN-4334-1: Git vulnerability

Carlo Arenas discovered that Git incorrectly handled certain URLs containing newlines, empty hosts, or lacking a scheme. A remote attacker could possibly use this issue to trick Git into returning credential information for a wrong host.

21 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts

USN-4332-1: File Roller vulnerability

It was discovered that File Roller incorrectly handled symlinks. An attacker could possibly use this issue to expose sensitive information.

20 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts

USN-4331-1: WebKitGTK+ vulnerability

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

20 April 2020 | ubuntu-19.10, ubuntu-18.04-lts

USN-4330-1: PHP vulnerabilities

It was discovered that PHP incorrectly handled certain file uploads. An attacker could possibly use this issue to cause a crash. (CVE-2020-7062) It was discovered that PHP incorrectly handled certain PHAR archive files. An attacker could possibly use this issue to access sensitive information. (CVE-2020-7063) It was discovered that PHP…

15 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts, ubuntu-14.04-esm, ubuntu-12.04-esm

USN-4329-1: Git vulnerability

Felix Wilhelm discovered that Git incorrectly handled certain URLs that included newlines. A remote attacker could possibly use this issue to trick Git into returning credential information for a wrong host.

14 April 2020 | ubuntu-19.10, ubuntu-18.04-lts, ubuntu-16.04-lts