Mozilla developers reported memory safety bugs present in Firefox 70. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 71.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Mozilla developers reported memory safety bugs present in Firefox 70. Some of these bugs showed evidence     of memory corruption and we presume that with enough effort some of these could have been exploited to run     arbitrary code. This vulnerability affects Firefox < 71. (CVE-2019-17013)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4216-2 advisory.

    USN-4216-1 fixed vulnerabilities in Firefox. This update provides the corresponding update for Ubuntu     16.04 LTS.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4216-1 advisory.

    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, or execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote Windows host is prior to 71.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-36 advisory.

  - Mozilla developers and community members Philipp, Diego Calleja, Mikhail Gavrilov, Jason Kratzer,     Christian Holler, Markus Stange, Tyson Smith reported memory safety bugs present in Firefox 70. Some of     these bugs showed evidence of memory corruption and we presume that with enough effort some of these could     have been exploited to run arbitrary code. (CVE-2019-17013)

  - Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited     to a denial of service). (CVE-2019-11756)

  - When using nested workers, a use-after-free could occur during worker destruction. This resulted in a     potentially exploitable crash. (CVE-2019-17008)

  - When setting a thread name on Windows in WebRTC, an incorrect number of arguments could have been     supplied, leading to stack corruption and a potentially exploitable crash.  Note: this issue only occurs     on Windows. Other operating systems are unaffected. (CVE-2019-13722)

  - When encrypting with a block cipher, if a call to <code>NSCEncryptUpdate</code> was made with data smaller     than the block size, a small out of bounds write could occur. This could have caused heap corruption and a     potentially exploitable crash. (CVE-2019-11745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 71.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-36 advisory.

  - Mozilla developers and community members Philipp, Diego Calleja, Mikhail Gavrilov, Jason Kratzer,     Christian Holler, Markus Stange, Tyson Smith reported memory safety bugs present in Firefox 70. Some of     these bugs showed evidence of memory corruption and we presume that with enough effort some of these could     have been exploited to run arbitrary code. (CVE-2019-17013)

  - Improper refcounting of soft token session objects could cause a use-after-free and crash (likely limited     to a denial of service). (CVE-2019-11756)

  - When using nested workers, a use-after-free could occur during worker destruction. This resulted in a     potentially exploitable crash. (CVE-2019-17008)

  - When setting a thread name on Windows in WebRTC, an incorrect number of arguments could have been     supplied, leading to stack corruption and a potentially exploitable crash.  Note: this issue only occurs     on Windows. Other operating systems are unaffected. (CVE-2019-13722)

  - When encrypting with a block cipher, if a call to <code>NSCEncryptUpdate</code> was made with data smaller     than the block size, a small out of bounds write could occur. This could have caused heap corruption and a     potentially exploitable crash. (CVE-2019-11745)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
246054	Linux Distros Unpatched Vulnerability : CVE-2019-17013	Nessus	Misc.	high
183555	Ubuntu 16.04 LTS : Firefox vulnerabilities (USN-4216-2)	Nessus	Ubuntu Local Security Checks	high
131924	Ubuntu 18.04 LTS : Firefox vulnerabilities (USN-4216-1)	Nessus	Ubuntu Local Security Checks	high
131773	Mozilla Firefox < 71.0	Nessus	Windows	high
131772	Mozilla Firefox < 71.0	Nessus	MacOS X Local Security Checks	high

Detections

Analytics

CVE-2019-17013

high

Tenable Plugins

high

high

high

high

high