Vulnerability Details : CVE-2022-3620
A vulnerability was found in Exim and classified as problematic. This issue affects the function dmarc_dns_lookup of the file dmarc.c of the component DMARC Handler. The manipulation leads to use after free. The attack may be initiated remotely. The name of the patch is 12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211919.
Vulnerability category: OverflowMemory Corruption
Products affected by CVE-2022-3620
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
- cpe:2.3:a:exim:exim:2022-10-18:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-3620
0.32%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-3620
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.6
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
2.2
|
3.4
|
VulDB | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2022-3620
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: cna@vuldb.com (Primary)
-
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- cna@vuldb.com (Primary)
- nvd@nist.gov (Secondary)
References for CVE-2022-3620
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EIH4W5R7SHTUEQFWWKB4TUO5YFZX64KV/
[SECURITY] Fedora 37 Update: exim-4.96-5.fc37 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://vuldb.com/?id.211919
CVE-2022-3620 | Exim DMARC dmarc.c dmarc_dns_lookup use after freeThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/667V3ADXQ2MHUJMSXA3VZZEWLVSCIBEU/
[SECURITY] Fedora 36 Update: exim-4.96-5.fc36 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XV2K2AWF62FSJ64B5CUZPFT4COK7P5PM/
[SECURITY] Fedora 35 Update: exim-4.96-5.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://git.exim.org/exim.git/commit/12fb3842f81bcbd4a4519d5728f2d7e0e3ca1445
git.exim.org Git - exim.git/commitMailing List;Patch;Vendor Advisory
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