CVE-2020-6820
Description
Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after-free. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Thunderbird < 68.7.0, Firefox < 74.0.1, and Firefox ESR < 68.6.1.
Risk Information
Base Score
8.1
MODERATE
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
4.997
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox (74.0.1) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox (x64) (74.0.1) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox ESR (68.6.1) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox ESR (x64) (68.6.1) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820,CVE-2020-6821,CVE-2020-6822,CVE-2020-6825 are fixed in Mozilla Thunderbird (68.7.0) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820,CVE-2020-6821,CVE-2020-6822,CVE-2020-6825 are fixed in Mozilla Thunderbird (x64) (68.7.0) | Windows |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox For Mac 74.0.1 | Mac |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820,CVE-2020-6821,CVE-2020-6822,CVE-2020-6825 are fixed in Mozilla Thunderbird For Mac (68.7.0) | Mac |
| Multiple Vulnerabilities are affected in Mozilla Firefox for Mac 68.0.1 | Mac |
| Multiple Vulnerabilities are affected in Firefox ESR for Mac 68.0.1 | Mac |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are affected in Mozilla Firefox for Mac 74.0 | Mac |
| Multiple Vulnerabilities are affected in Mozilla Thunderbird for Mac 68.6.0 | Mac |
| Vulnerabilities CVE-2020-6819,CVE-2020-6820 are fixed in Mozilla Firefox For Mac 68.6.1 | Mac |
| firefox-esr security update(DSA-4653-1) firefox-esr_68.6.1esr-1~deb9u1_i386.deb | Linux |
| firefox-esr security update(DSA-4653-1) firefox-esr_68.6.1esr-1~deb9u1_amd64.deb | Linux |
| firefox-esr security update(DSA-4653-1) firefox-esr_68.6.1esr-1~deb10u1_i386.deb | Linux |
| firefox-esr security update(DSA-4653-1) firefox-esr_68.6.1esr-1~deb10u1_amd64.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.16.04.1_i386.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.16.04.1_amd64.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.18.04.1_i386.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.18.04.1_amd64.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.19.10.1_i386.deb | Linux |
| Mozilla Open Source web browser (USN-4317-1) firefox_74.0.1+build1-0ubuntu0.19.10.1_amd64.deb | Linux |
| (RHSA-2020:1338) firefox security update firefox-68.6.1-1.el7_8.i686.rpm | Linux |
| (RHSA-2020:1338) firefox security update firefox-68.6.1-1.el7_8.x86_64.rpm | Linux |
| (RHSA-2020:1339) firefox security update firefox-68.6.1-1.el6_10.i686.rpm | Linux |
| (RHSA-2020:1339) firefox security update firefox-68.6.1-1.el6_10.x86_64.rpm | Linux |
| thunderbird security update(DSA-4656-1) thunderbird_68.7.0-1~deb9u1_i386.deb | Linux |
| thunderbird security update(DSA-4656-1) thunderbird_68.7.0-1~deb9u1_amd64.deb | Linux |
| thunderbird security update(DSA-4656-1) thunderbird_68.7.0-1~deb10u1_i386.deb | Linux |
| thunderbird security update(DSA-4656-1) thunderbird_68.7.0-1~deb10u1_amd64.deb | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4328-1) thunderbird_68.7.0+build1-0ubuntu0.18.04.1_i386.deb | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4328-1) thunderbird_68.7.0+build1-0ubuntu0.18.04.1_amd64.deb | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4328-1) thunderbird_68.7.0+build1-0ubuntu0.19.10.1_i386.deb | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4328-1) thunderbird_68.7.0+build1-0ubuntu0.19.10.1_amd64.deb | Linux |
| (RHSA-2020:1488) thunderbird security update thunderbird-68.7.0-1.el6_10.i686.rpm | Linux |
| (RHSA-2020:1488) thunderbird security update thunderbird-68.7.0-1.el6_10.x86_64.rpm | Linux |
| (RHSA-2020:1489) thunderbird security update thunderbird-68.7.0-1.el7_8.x86_64.rpm | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4335-1) thunderbird_68.7.0+build1-0ubuntu0.16.04.2_i386.deb | Linux |
| Mozilla Open Source mail and newsgroup client (USN-4335-1) thunderbird_68.7.0+build1-0ubuntu0.16.04.2_amd64.deb | Linux |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-313638 | Mozilla Firefox (74.0.1) |
| PATCH-313639 | Mozilla Firefox (x64) (74.0.1) |
| PATCH-313640 | Mozilla Firefox ESR (68.6.1) |
| PATCH-313641 | Mozilla Firefox ESR (x64) (68.6.1) |
| PATCH-313712 | Mozilla Thunderbird (68.7.0) |
| PATCH-313713 | Mozilla Thunderbird (x64) (68.7.0) |
| PATCH-611870 | Mozilla Firefox For Mac (142.0.1) |
| PATCH-611353 | Mozilla Thunderbird For Mac (128.12.0) |
| PATCH-611870 | Mozilla Firefox For Mac (142.0.1) |
| PATCH-611808 | Mozilla Firefox ESR for MAC 128.14.0 |
| PATCH-611870 | Mozilla Firefox For Mac (142.0.1) |
| PATCH-611807 | Mozilla Thunderbird For Mac (142.0) |
| PATCH-612783 | Mozilla Firefox For Mac (145.0.1) |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234