Headline
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.
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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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.