Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| asterisk | asterisk | affected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Asterisk | Asterisk | — |
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-26117 | Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn't in a previous 401 response's WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn't being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds. |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.425% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Sangoma
Sangoma asterisk |
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| CPEs | cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Sangoma
Sangoma asterisk |
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Asterisk
Asterisk asterisk |
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| Vendors & Products |
Asterisk
Asterisk asterisk |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.15.2, 21.10.2, and 22.5.2, if a SIP request is received with an Authorization header that contains a realm that wasn't in a previous 401 response's WWW-Authenticate header, or an Authorization header with an incorrect realm was received without a previous 401 response being sent, the get_authorization_header() function in res_pjsip_authenticator_digest will return a NULL. This wasn't being checked before attempting to get the digest algorithm from the header which causes a SEGV. This issue has been patched in versions 20.15.2, 21.10.2, and 22.5.2. There are no workarounds. | |
| Title | Asterisk can crash from a specifically malformed Authorization header in an incoming SIP request | |
| Weaknesses | CWE-253 | |
| References |
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| Metrics |
cvssV3_1
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