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CVE-2019-25136: Security vulnerabilities fixed in - Firefox 70

A compromised child process could have injected XBL Bindings into privileged CSS rules, resulting in arbitrary code execution and a sandbox escape. This vulnerability affects Firefox < 70.

CVE
#xss#vulnerability#web#mac#google#js#java#buffer_overflow#firefox

Mozilla Foundation Security Advisory 2019-34

Announced

October 22, 2019

Impact

critical

Products

Firefox

Fixed in

  • Firefox 70

Note: We have updated this advisory on June 26, 2020 to include CVE-2020-12412 and on March 20, 2023 to include CVE-2019-25136, which were fixed in Firefox 70 but not recognized or acknowledged immediately.

#CVE-2018-6156: Heap buffer overflow in FEC processing in WebRTC

Reporter

Google Project Zero

Impact

high

Description

Incorrect derivation of a packet length in WebRTC caused heap corruption via a crafted video file. This resulted in a potentially exploitable crash.

References

  • Bug 1480088

#CVE-2019-15903: Heap overflow in expat library in XML_GetCurrentLineNumber

Reporter

Sebastian Pipping

Impact

high

Description

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early. A subsequent call to XML_GetCurrentLineNumber or XML_GetCurrentColumnNumber then resulted in a heap-based buffer over-read.

References

  • Bug 1584907

#CVE-2019-11757: Use-after-free when creating index updates in IndexedDB

Reporter

Zhanjia Song

Impact

high

Description

When storing a value in IndexedDB, the value’s prototype chain is followed and it was possible to retain a reference to a locale, delete it, and subsequently reference it. This resulted in a use-after-free and a potentially exploitable crash.

References

  • Bug 1577107

#CVE-2019-25136: Invalid styles allowed from content processes

Reporter

Emilio Cobos Álvarez

Impact

high

Description

A compromised child process could have injected XBL Bindings into privileged CSS rules, resulting in arbitrary code execution and a sandbox escape.

References

  • Bug 1530709

#CVE-2020-12412: Address bar spoof using history navigation and blocked ports

Reporter

Adrian Karolak from ING Tech Poland

Impact

moderate

Description

By navigating a tab using the history API, an attacker could cause the address bar to display the incorrect domain (with the https:// scheme, a blocked port number such as '1’, and without a lock icon) while controlling the page contents.

References

  • Bug 1528587

#CVE-2019-11759: Stack buffer overflow in HKDF output

Reporter

Guido Vranken

Impact

moderate

Description

An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on the stack. This could be used by an attacker to execute arbitrary code or more likely lead to a crash.

References

  • Bug 1577953

#CVE-2019-11760: Stack buffer overflow in WebRTC networking

Reporter

Nils

Impact

moderate

Description

A fixed-size stack buffer could overflow in nrappkit when doing WebRTC signaling. This resulted in a potentially exploitable crash in some instances.

References

  • Bug 1577719

#CVE-2019-11761: Unintended access to a privileged JSONView object

Reporter

Cody Crews

Impact

moderate

Description

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms.

References

  • Bug 1561502

#CVE-2019-11762: document.domain-based origin isolation has same-origin-property violation

Reporter

Kris Maglione

Impact

moderate

Description

If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window.

References

  • Bug 1582857

#CVE-2019-11763: Incorrect HTML parsing results in XSS bypass technique

Reporter

Gareth Heyes

Impact

moderate

Description

Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters, enabling the use of entities to mask the actual characters of interest from filters.

References

  • Bug 1584216

#CVE-2019-11765: Incorrect permissions could be granted to a website

Reporter

Paul Theriault

Impact

moderate

Description

A compromised content process could send a message to the parent process that would cause the ‘Click to Play’ permission prompt to be shown. However, due to lack of validation from the parent process, if the user accepted the permission request an attacker-controlled permission would be granted rather than the ‘Click to Play’ permission.

References

  • Bug 1562582

#CVE-2019-17000: CSP bypass using object tag with data: URI

Reporter

Yangzheng Li

Impact

moderate

Description

An object tag with a data URI did not correctly inherit the document’s Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document’s policy explicitly allowed data: URIs.

References

  • Bug 1441468

#CVE-2019-17001: CSP bypass using object tag when script-src ‘none’ is specified

Reporter

Matheus Vrech

Impact

moderate

Description

A Content-Security-Policy that blocks in-line scripts could be bypassed using an object tag to execute JavaScript in the protected document (cross-site scripting). This is a separate bypass from CVE-2019-17000.
Note: This flaw only affected Firefox 69 and was not present in earlier versions.

References

  • Bug 1587976

#CVE-2019-17002: upgrade-insecure-requests was not being honored for links dragged and dropped

Reporter

Kevin Brosnan

Impact

low

Description

If upgrade-insecure-requests was specified in the Content Security Policy, and a link was dragged and dropped from that page, the link was not upgraded to https.

References

  • Bug 1561056

#CVE-2019-11764: Memory safety bugs fixed in Firefox 70 and Firefox ESR 68.2

Reporter

Mozilla developers and community

Impact

critical

Description

Mozilla developers and community members Bob Clary, Jason Kratzer, Aaron Klotz, Iain Ireland, Tyson Smith, Christian Holler, Steve Fink, Honza Bambas, Byron Campen, and Cristian Brindusan reported memory safety bugs present in Firefox 69 and Firefox ESR 68.1. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could be exploited to run arbitrary code.

References

  • Memory safety bugs fixed in Firefox 70 and Firefox ESR 68.2

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CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-11761: Security vulnerabilities fixed in - Thunderbird 68.2

By using a form with a data URI it was possible to gain access to the privileged JSONView object that had been cloned into content. Impact from exposing this object appears to be minimal, however it was a bypass of existing defense in depth mechanisms. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

CVE-2019-15903: [CVE-2019-15903] Deny internal entities closing the doctype (for #317) by hartwork · Pull Request #318 · libexpat/libexpat

In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

CVE-2018-6156: Stable Channel Update for Desktop

Incorect derivation of a packet length in WebRTC in Google Chrome prior to 68.0.3440.75 allowed a remote attacker to potentially exploit heap corruption via a crafted video file.

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