CVE-2022-23608— PJSIP 资源管理错误漏洞

Use after free in PJSIP

PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In versions up to and including 2.11.1 when in a dialog set (or forking) scenario, a hash key shared by multiple UAC dialogs can potentially be prematurely freed when one of the dialogs is destroyed . The issue may cause a dialog set to be registered in the hash table multiple times (with different hash keys) leading to undefined behavior such as dialog list collision which eventually leading to endless loop. A patch is available in commit db3235953baa56d2fb0e276ca510fefca751643f which will be included in the next release. There are no known workarounds for this issue.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

释放后使用

PJSIP 资源管理错误漏洞

PJSIP是一个免费和开源的多媒体通信库，用C语言编写，实现基于标准的协议，如SIP, SDP, RTP, STUN, TURN，和ICE。 PJSIP 存在资源管理错误漏洞，该漏洞源于在2.11.1之前的版本中，在对话框集(或分叉)场景中，多个UAC对话框共享的哈希键可能会在其中一个对话框被销毁时提前释放。攻击者可利用该漏洞导致一个对话框集在哈希表中注册多次(使用不同的哈希键)，从而导致未定义的行为，如对话列表冲突，最终导致无尽的循环。

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