CVE-2021-29976
published 2021-08-05CVE-2021-29976: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. Some of these bugs showed evidence of memory corruption…
PriorityP343high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
1.22%
65.1th percentile
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | firefox | < firefox 90.0-1 (sid) | firefox 90.0-1 (sid) |
| debian | firefox-esr | < firefox 90.0-1 (sid) | firefox 90.0-1 (sid) |
| debian | thunderbird | < firefox 90.0-1 (sid) | firefox 90.0-1 (sid) |
| mozilla | firefox | < 90.0 | 90.0 |
| mozilla | firefox | — | — |
| mozilla | firefox | >= unspecified < 90 | 90 |
| mozilla | firefox_esr | < 78.12 | 78.12 |
| mozilla | firefox_esr | >= unspecified < 78.12 | 78.12 |
| mozilla | thunderbird | < 78.12 | 78.12 |
| mozilla | thunderbird | >= 0 < 1:78.12.0-1 | 1:78.12.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.12.0-1 | 1:78.12.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.12.0-1 | 1:78.12.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.12.0-1 | 1:78.12.0-1 |
| mozilla | thunderbird | >= 0 < 1:78.13.0+build1-0ubuntu0.18.04.1 | 1:78.13.0+build1-0ubuntu0.18.04.1 |
| mozilla | thunderbird | >= 0 < 1:78.13.0+build1-0ubuntu0.20.04.2 | 1:78.13.0+build1-0ubuntu0.20.04.2 |
| mozilla | thunderbird | >= unspecified < 78.12 | 78.12 |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
vendor_ubuntu5.9MEDIUM
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GHSA
GHSA-jv3x-w8ff-cj2g: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
ghsa_unreviewed·2022-05-24
CVE-2021-29976 [HIGH] CWE-787 GHSA-jv3x-w8ff-cj2g: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
OSV
thunderbird vulnerabilities
osv·2021-08-31·CVSS 5.9
CVE-2021-29969 [MEDIUM] thunderbird vulnerabilities
thunderbird vulnerabilities
It was discovered that Thunderbird didn't ignore IMAP server responses
prior to completion of the STARTTLS handshake. A person-in-the-middle
could potentially exploit this to trick Thunderbird into showing incorrect
information. (CVE-2021-29969)
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service, or
execute arbitrary code. (CVE-2021-29970, CVE-2021-29976, CVE-2021-29980,
CVE-2021-29984, CVE-2021-29985, CVE-2021-29986, CVE-2021-29988,
CVE-2021-29989, CVE-2021-30547)
OSV
CVE-2021-29976: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
osv·2021-08-05·CVSS 8.8
CVE-2021-29976 [HIGH] CVE-2021-29976: Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2021-08-31·CVSS 5.9
CVE-2021-29985 [MEDIUM] Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
It was discovered that Thunderbird didn't ignore IMAP server responses
prior to completion of the STARTTLS handshake. A person-in-the-middle
could potentially exploit this to trick Thunderbird into showing incorrect
information. (CVE-2021-29969)
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service, or
execute arbitrary code. (CVE-2021-29970, CVE-2021-29976, CVE-2021-29980,
CVE-2021-29984, CVE-2021-29985, CVE-2021-29986, CVE-2021-29988,
CVE-2021-29989, CVE-2021-30547)
Instructions: After a standard system update you need to restart
Ubuntu
Firefox vulnerabilities
vendor_ubuntu·2021-07-16
CVE-2021-29974 Firefox vulnerabilities
Title: Firefox vulnerabilities
Summary: Firefox could be made to crash or run programs as your login if it
opened a malicious website.
Multiple security issues were discovered in Firefox. If a user were
tricked into opening a specially crafted website, an attacker could
potentially exploit these to cause a denial of service, overlay text
over another domain, or execute arbitrary code.
Instructions: After a standard system update you need to restart Firefox to make
all the necessary changes.
Red Hat
Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12
vendor_redhat·2021-07-13·CVSS 8.8
CVE-2021-29976 [HIGH] CWE-120 Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12
Mozilla: Memory safety bugs fixed in Firefox 90 and Firefox ESR 78.12
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Package: firefox (Red Hat Enterprise Linux 6) - Out of support scope
Package: thunderbird (Red Hat Enterprise Linux 6) - Out of support scope
Debian
CVE-2021-29976: firefox - Mozilla developers reported memory safety bugs present in code shared between Fi...
vendor_debian·2021·CVSS 8.8
CVE-2021-29976 [HIGH] CVE-2021-29976: firefox - Mozilla developers reported memory safety bugs present in code shared between Fi...
Mozilla developers reported memory safety bugs present in code shared between Firefox and Thunderbird. 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 Thunderbird < 78.12, Firefox ESR < 78.12, and Firefox < 90.
Scope: local
sid: resolved (fixed in 90.0-1)
Mozilla
Mozilla Foundation Security Advisory 2021-28: CVE-2021-29976
vendor_mozilla·CVSS 8.8
CVE-2021-29976 [HIGH] Mozilla Foundation Security Advisory 2021-28: CVE-2021-29976
Mozilla Foundation Security Advisory 2021-28
CVE: CVE-2021-29976
Product: Firefox
Impact: high
Fixed in: Firefox 90
Mozilla
Mozilla Foundation Security Advisory 2021-29: CVE-2021-29976
vendor_mozilla·CVSS 8.8
CVE-2021-29976 [HIGH] Mozilla Foundation Security Advisory 2021-29: CVE-2021-29976
Mozilla Foundation Security Advisory 2021-29
CVE: CVE-2021-29976
Product: Firefox ESR
Impact: high
Fixed in: Firefox ESR 78.12
Mozilla
Mozilla Foundation Security Advisory 2021-30: CVE-2021-29976
vendor_mozilla·CVSS 8.8
CVE-2021-29976 [HIGH] Mozilla Foundation Security Advisory 2021-30: CVE-2021-29976
Mozilla Foundation Security Advisory 2021-30
CVE: CVE-2021-29976
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 78.12
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1700895%2C1703334%2C1706910%2C1711576%2C1714391https://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.mozilla.org/security/advisories/mfsa2021-28/https://www.mozilla.org/security/advisories/mfsa2021-29/https://www.mozilla.org/security/advisories/mfsa2021-30/https://bugzilla.mozilla.org/buglist.cgi?bug_id=1700895%2C1703334%2C1706910%2C1711576%2C1714391https://security.gentoo.org/glsa/202202-03https://security.gentoo.org/glsa/202208-14https://www.mozilla.org/security/advisories/mfsa2021-28/https://www.mozilla.org/security/advisories/mfsa2021-29/https://www.mozilla.org/security/advisories/mfsa2021-30/
2021-08-05
Published