It is possible to delete an IndexedDB key value and subsequently try to extract it during conversion. This results in a use-after-free and a potentially exploitable crash. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1501152 | permissions required vendor advisory issue tracking |
| https://www.mozilla.org/security/advisories/mfsa2019-25/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-27/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-26/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-29/ | vendor advisory |
| https://www.mozilla.org/security/advisories/mfsa2019-30/ | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html | vendor advisory |
| http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html | vendor advisory |
| https://usn.ubuntu.com/4150-1/ | vendor advisory |
| https://security.gentoo.org/glsa/201911-07 | vendor advisory |