Ubuntu.comUB:CVE-2021-29982CVE-2021-29982
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
57.7%
Due to incorrect JIT optimization, we incorrectly interpreted data from the
wrong type of object, resulting in the potential leak of a single bit of
memory. This vulnerability affects Firefox < 91 and Thunderbird < 91.
Notes
| Author | Note |
|---|---|
| tyhicks | mozjs contains a copy of the SpiderMonkey JavaScript engine |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | firefox | < 91.0+build2-0ubuntu0.18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | firefox | < 91.0+build2-0ubuntu0.20.04.1 | UNKNOWN |
| ubuntu | 21.04 | noarch | firefox | < 91.0+build2-0ubuntu0.21.04.1 | UNKNOWN |
| ubuntu | 21.10 | noarch | firefox | < 91.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 22.04 | noarch | firefox | < 91.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 22.10 | noarch | firefox | < 91.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 23.04 | noarch | firefox | < 91.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 23.10 | noarch | firefox | < 91.0+build2-0ubuntu1 | UNKNOWN |
| ubuntu | 18.04 | noarch | mozjs38 | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | mozjs52 | < any | UNKNOWN |
References
launchpad.net/bugs/cve/CVE-2021-29982
nvd.nist.gov/vuln/detail/CVE-2021-29982
security-tracker.debian.org/tracker/CVE-2021-29982
ubuntu.com/security/notices/USN-5037-1
ubuntu.com/security/notices/USN-5248-1
www.cve.org/CVERecord?id=CVE-2021-29982
www.mozilla.org/en-US/security/advisories/mfsa2021-33/#CVE-2021-29982
Related
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
0.002 Low
EPSS
Percentile
57.7%