// For flags

CVE-2022-22747

Mozilla: Crash when handling empty pkcs7 sequence

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

After accepting an untrusted certificate, handling an empty pkcs7 sequence as part of the certificate data could have lead to a crash. This crash is believed to be unexploitable. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

Después de aceptar un certificado que no es de confianza, manejar una secuencia pkcs7 vacía como parte de los datos del certificado podría haber provocado un bloqueo. Se cree que este accidente no es explotable. Esta vulnerabilidad afecta a Firefox ESR &lt; 91.5, Firefox &lt; 96 y Thunderbird &lt; 91.5.

The Mozilla Foundation Security Advisory describes this flaw as: After accepting an untrusted certificate, handling an empty pkcs7 sequence as part of the certificate data could have lead to a crash. This crash is believed to be unexploitable.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-01-07 CVE Reserved
  • 2022-01-13 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-08-12 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-295: Improper Certificate Validation
  • CWE-476: NULL Pointer Dereference
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
Search vendor "Mozilla"
Firefox
Search vendor "Mozilla" for product "Firefox"
< 96.0
Search vendor "Mozilla" for product "Firefox" and version " < 96.0"
-
Affected
Mozilla
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Firefox Esr
Search vendor "Mozilla" for product "Firefox Esr"
< 91.5
Search vendor "Mozilla" for product "Firefox Esr" and version " < 91.5"
-
Affected
Mozilla
Search vendor "Mozilla"
Thunderbird
Search vendor "Mozilla" for product "Thunderbird"
< 91.5
Search vendor "Mozilla" for product "Thunderbird" and version " < 91.5"
-
Affected