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CVE-2023-49294— Asterisk Path Traversal vulnerability

Quick assessment

Affected
asterisk asterisk
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Asterisk是一款PBX系统的软件，运行在Linux系统上，支持使用SIP、IAX、H323协议进行IP通话。 Asterisk 18.20.1 之前、20.5.1 之前 和 21.0.1 之前版本、Certified-asterisk 18.9-cert6 之前版本存在路径遍历漏洞，该漏洞源于即使未启用live_dangerously，也可以读取任何任意文件。

CVSS 4.9 · Medium EPSS 45.29% · P99

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2023-49294

Vulnerability Information
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Vulnerability Title
Asterisk Path Traversal vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, it is possible to read any arbitrary file even when the `live_dangerously` is not enabled. This allows arbitrary files to be read. Asterisk versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, contain a fix for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Asterisk 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Asterisk是一款PBX系统的软件，运行在Linux系统上，支持使用SIP、IAX、H323协议进行IP通话。 Asterisk 18.20.1 之前、20.5.1 之前 和 21.0.1 之前版本、Certified-asterisk 18.9-cert6 之前版本存在路径遍历漏洞，该漏洞源于即使未启用live_dangerously，也可以读取任何任意文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
asterisk asterisk < 18.20.1 -

II. Public POCs for CVE-2023-49294

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III. Intelligence Information for CVE-2023-49294

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Patches & Fixes for CVE-2023-49294 (1)

Vendor Advisories for CVE-2023-49294 (1)

Mailing List Discussions for CVE-2023-49294 (1)

Other References for CVE-2023-49294 (1)

Same Patch Batch · asterisk · 2023-12-14 · 3 CVEs total

CVE-2023-37457 7.5 HIGH Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'upd
CVE-2023-49786 7.5 HIGH Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation

IV. Related Vulnerabilities

Same product: asterisk
Same vendor: asterisk
Same weakness: CWE-22

V. Comments for CVE-2023-49294

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