Ubuntu Secutity Notices

It was discovered that Libextractor incorrectly handled zero sample rate. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15266) It was discovered that Libextractor incorrectly handled certain FLAC metadata. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15267) It was discovered that Libextractor incorrectly handled certain specially crafted files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15600, CVE-2018-16430, CVE-2018-20430) It was discovered that Libextractor incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15601) It was discovered that Libextractor incorrectly handled integers. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15602) It was discovered that Libextractore incorrectly handled certain crafted files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-15922) It was discovered tha Libextractor incorrectly handled certain files. An attacker could possibly use this issue to cause a denial of service. (CVE-2017-17440) It was discovered that Libextractor incorrectly handled certain malformed files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-14346) It was discovered that Libextractor incorrectly handled malformed files. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-14347) It was discovered that Libextractor incorrectly handled metadata. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-20431)

James Henstridge discovered that an Ubuntu-specific patch caused PulseAudio to incorrectly handle snap client connections. An attacker could possibly use this to expose sensitive information.

USN-4634-1 fixed several vulnerabilities in OpenLDAP. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: It was discovered that OpenLDAP incorrectly handled certain malformed inputs. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service.

USN-4637-1 fixed vulnerabilities in Firefox. This update provides the corresponding updates for Ubuntu 16.04 LTS. Original advisory details: Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across origins, bypass security restrictions, conduct phishing attacks, conduct cross-site scripting (XSS) attacks, bypass Content Security Policy (CSP) restrictions, conduct DNS rebinding attacks, or execute arbitrary code.

It was discovered that there was a bug in the way phpMyAdmin handles the phpMyAdmin Configuration Storage tables. An authenticated attacker could use this vulnerability to cause phpmyAdmin to leak sensitive files. (CVE-2018-19968) It was discovered that phpMyAdmin incorrectly handled user input. An attacker could possibly use this for an XSS attack. (CVE-2018-19970) It was discovered that phpMyAdmin mishandled certain input. An attacker could use this vulnerability to execute a cross-site scripting (XSS) attack via a crafted URL. (CVE-2018-7260) It was discovered that phpMyAdmin failed to sanitize certain input. An attacker could use this vulnerability to execute an SQL injection attack via a specially crafted database name. (CVE-2019-11768) It was discovered that phpmyadmin incorrectly handled some requests. An attacker could possibly use this to perform a CSRF attack. (CVE-2019-12616) It was discovered that phpMyAdmin failed to sanitize certain input. An attacker could use this vulnerability to execute an SQL injection attack via a specially crafted username. (CVE-2019-6798, CVE-2020-10804, CVE-2020-5504) It was discovered that phpMyAdmin would allow sensitive files to be leaked if certain configuration options were set. An attacker could use this vulnerability to access confidential information. (CVE-2019-6799) It was discovered that phpMyAdmin failed to sanitize certain input. An attacker could use this vulnerability to execute an SQL injection attack via a specially crafted database or table name. (CVE-2020-10802) It was discovered that phpMyAdmin did not properly handle data from the database when displaying it. If an attacker were to insert specially- crafted data into certain database tables, the attacker could execute a cross-site scripting (XSS) attack. (CVE-2020-10803) It was discovered that phpMyAdmin was vulnerable to an XSS attack. If a victim were to click on a crafted link, an attacker could run malicious JavaScript on the victim's system. (CVE-2020-26934) It was discovered that phpMyAdmin did not properly handler certain SQL statements in the search feature. An attacker could use this vulnerability to inject malicious SQL into a query. (CVE-2020-26935)

It was discovered that c-ares incorrectly handled certain DNS requests. An attacker could possibly use this issue to cause a denial of service.

Multiple security issues were discovered in Firefox. If a user were tricked in to opening a specially crafted website, an attacker could potentially exploit these to cause a denial of service, obtain sensitive information across origins, bypass security restrictions, conduct phishing attacks, conduct cross-site scripting (XSS) attacks, bypass Content Security Policy (CSP) restrictions, conduct DNS rebinding attacks, or execute arbitrary code.

It was discovered that LibVNCServer incorrectly handled certain internals. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Vino package ships with a LibVNCServer source and all listed releases were affected for this package.

Demi Obenour discovered that Kerberos incorrectly handled certain ASN.1. An attacker could possibly use this issue to cause a denial of service.

It was discovered that OpenLDAP incorrectly handled certain malformed inputs. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service.

Peter Eisentraut discovered that PostgreSQL incorrectly handled connection security settings. Client applications could possibly be connecting with certain security parameters dropped, contrary to expectations. (CVE-2020-25694) Etienne Stalmans discovered that PostgreSQL incorrectly handled the security restricted operation sandbox. An authenticated remote attacker could possibly use this issue to execute arbitrary SQL functions as a superuser. (CVE-2020-25695) Nick Cleaton discovered that PostgreSQL incorrectly handled the \gset meta-command. A remote attacker with a compromised server could possibly use this issue to execute arbitrary code. (CVE-2020-25696)

USN-4607-1 fixed vulnerabilities and added features in OpenJDK. Unfortunately, that update introduced a regression that could cause TLS connections with client certificate authentication to fail in some situations. This update fixes the problem. We apologize for the inconvenience. Original advisory details: It was discovered that OpenJDK incorrectly handled deserializing Proxy class objects with many interfaces. A remote attacker could possibly use this issue to cause a denial of service (memory consumption) via a specially crafted input. (CVE-2020-14779) Sergey Ostanin discovered that OpenJDK incorrectly restricted authentication mechanisms. A remote attacker could possibly use this issue to obtain sensitive information over an unencrypted connection. (CVE-2020-14781) It was discovered that OpenJDK incorrectly handled untrusted certificates. An attacker could possibly use this issue to read or write sensitive information. (CVE-2020-14782) Zhiqiang Zang discovered that OpenJDK incorrectly checked for integer overflows. An attacker could possibly use this issue to bypass certain Java sandbox restrictions. (CVE-2020-14792) Markus Loewe discovered that OpenJDK incorrectly checked permissions when converting a file system path to an URI. An attacker could possibly use this issue to bypass certain Java sandbox restrictions. (CVE-2020-14796) Markus Loewe discovered that OpenJDK incorrectly checked for invalid characters when converting an URI to a path. An attacker could possibly use this issue to read or write sensitive information. (CVE-2020-14797) Markus Loewe discovered that OpenJDK incorrectly checked the length of input strings. An attacker could possibly use this issue to bypass certain Java sandbox restrictions. (CVE-2020-14798) It was discovered that OpenJDK incorrectly handled boundary checks. An attacker could possibly use this issue to bypass certain Java sandbox restrictions. (CVE-2020-14803)

It was discovered that the SLiRP networking implementation of the QEMU emulator did not properly manage memory under certain circumstances. An attacker could use this to cause a heap-based buffer overflow or other out- of-bounds access, which can lead to a denial of service (application crash) or potentially execute arbitrary code. (CVE-2020-7039) It was discovered that the SLiRP networking implementation of the QEMU emulator misuses snprintf return values. An attacker could use this to cause a denial of service (application crash) or potentially execute arbitrary code. (CVE-2020-8608)

It was discovered that libmaxminddb incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause applications using libmaxminddb to crash, resulting in a denial of service.

USN-4171-1 fixed vulnerabilities in Apport. The update caused a regression when handling configuration files. This update fixes the problem, and also introduces further hardening measures. Original advisory details: Kevin Backhouse discovered Apport would read its user-controlled settings file as the root user. This could be used by a local attacker to possibly crash Apport or have other unspecified consequences. (CVE-2019-11481) Sander Bos discovered a race-condition in Apport during core dump creation. This could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-11482) Sander Bos discovered Apport mishandled crash dumps originating from containers. This could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-11483) Sander Bos discovered Apport mishandled lock-file creation. This could be used by a local attacker to cause a denial of service against Apport. (CVE-2019-11485) Kevin Backhouse discovered Apport read various process-specific files with elevated privileges during crash dump generation. This could could be used by a local attacker to generate a crash report for a privileged process that is readable by an unprivileged user. (CVE-2019-15790)

USN-4628-1 provided updated Intel Processor Microcode. Unfortunately, that update prevented certain processors in the Intel Tiger Lake family from booting successfully. This update reverts the microcode update for the Tiger Lake processor family. Please note that the 'dis_ucode_ldr' kernel command line option can be added in the boot menu to disable microcode loading for system recovery. We apologize for the inconvenience. Original advisory details: Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running Average Power Limit (RAPL) feature of some Intel processors allowed a side- channel attack based on power consumption measurements. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8695) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly remove sensitive information before storage or transfer in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8696) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly isolate shared resources in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8698)

USN-4622-1 fixed a vulnerability in OpenLDAP. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: It was discovered that OpenLDAP incorrectly handled certain network packets. A remote attacker could use this issue to cause OpenLDAP to crash, resulting in a denial of service, or possibly execute arbitrary code.

Hanno Böck discovered that Raptor incorrectly handled certain memory operations. If a user were tricked into opening a specially crafted document in an application linked against Raptor, an attacker could cause the application to crash, resulting in a denial of service, or possibly execute arbitrary code.

Michael Chapman discovered that MoinMoin incorrectly handled certain cache actions. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-25074) Catarina Leite discovered that MoinMoin incorrectly handled certain SVG files. An attacker could possibly use this issue to execute arbitrary code. (CVE-2020-15275)

Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running Average Power Limit (RAPL) feature of some Intel processors allowed a side- channel attack based on power consumption measurements. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8695) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly remove sensitive information before storage or transfer in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8696) Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that some Intel(R) Processors did not properly isolate shared resources in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2020-8698)