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CVE-2021-43300

Quick assessment

Affected
teluu pjsip
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pjsua Api是一个高级 Api。用于构建 Sip 多媒体用户代理应用程序。 Pjsua Api 存在缓冲区错误漏洞。攻击者可利用该漏洞通过控制的filename参数导致缓冲区溢出，因为它被复制到固定大小的堆栈缓冲区，而没有任何大小验证。

AI Predicted 7.5 Difficulty: Easy EPSS 2.36% · P82

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-43300

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Stack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
Pjsua Api 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pjsua Api是一个高级 Api。用于构建 Sip 多媒体用户代理应用程序。 Pjsua Api 存在缓冲区错误漏洞。攻击者可利用该漏洞通过控制的filename参数导致缓冲区溢出，因为它被复制到固定大小的堆栈缓冲区，而没有任何大小验证。
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
teluu pjsip unspecified ~ 2.11.1 -

II. Public POCs for CVE-2021-43300

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III. Intelligence Information for CVE-2021-43300

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Vendor Advisories for CVE-2021-43300 (2)

Mailing List Discussions for CVE-2021-43300 (3)

Same Patch Batch · teluu · 2022-02-16 · 5 CVEs total

CVE-2021-43299 Pjsua Api 缓冲区错误漏洞
CVE-2021-43301 Pjsua Api 缓冲区错误漏洞
CVE-2021-43302 Pjsua Api 缓冲区错误漏洞
CVE-2021-43303 PJSUA API 安全漏洞

IV. Related Vulnerabilities

Same product: pjsip
Same vendor: teluu
Same weakness: CWE-121

V. Comments for CVE-2021-43300

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