Vulnerability Details : CVE-2023-37457
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an outside source. If the 'update' functionality is not used the vulnerability does not occur. A patch is available at commit a1ca0268254374b515fa5992f01340f7717113fa.
Vulnerability category: Overflow
Products affected by CVE-2023-37457
- cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
- cpe:2.3:a:digium:asterisk:21.0.0:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert3:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert3:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert5:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert10:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert9:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert3:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert12:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert7:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc3:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert5:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc1:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:-:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:18.9:cert4:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc2:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert8:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert11:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert6:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:*:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:13.13.0:cert1-rc4:*:*:*:*:*:*
- cpe:2.3:a:sangoma:certified_asterisk:16.8.0:cert4:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-37457
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 55 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-37457
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
8.2
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
3.9
|
4.2
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2023-37457
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2023-37457
-
https://lists.debian.org/debian-lts-announce/2023/12/msg00019.html
[SECURITY] [DLA 3696-1] asterisk security update
-
https://github.com/asterisk/asterisk/security/advisories/GHSA-98rc-4j27-74hh
PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update' · Advisory · asterisk/asterisk · GitHubVendor Advisory
-
https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa
res_pjsip_header_funcs: Duplicate new header value, don't copy. · asterisk/asterisk@a1ca026 · GitHubPatch
Jump to