CVE-2026-77396— PJSIP AVI解析器堆缓冲区溢出漏洞
一分钟漏洞结论
影响对象
pjsip pjproject
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/avi_player.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity
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一、 漏洞 CVE-2026-77396 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
PJSIP: Heap buffer overflow in the AVI parser
来源: CVE Program / CVE List V5
Vulnerability Description
PJSIP is a free and open source multimedia communication library written in C. In 2.17 and earlier, the PJSIP AVI parser in pjmedia/src/pjmedia/avi_player.c uses an input-file video chunk length as the number of bytes copied into a frame buffer whose capacity is derived from the declared media dimensions. A crafted AVI file can therefore cause an attacker-controlled out-of-bounds write past the heap allocation when an application plays the file or pulls its frames. The existing size assertion does not protect production release builds, where assertions are disabled. Typical local playback can crash the process, while applications that accept untrusted AVI sources expose a stronger memory-corruption condition. No fixed version is available as of this review.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
来源: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
来源: CVE Program / CVE List V5
受影响产品
二、漏洞 CVE-2026-77396 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
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CVE-2026-77396 补丁与修复 (1)
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Merge commit from fork · pjsip/pjproject@7ecc658 · GitHub x_refsource_MISC
CVE-2026-77396 其他参考 (1)
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Heap buffer overflow in the AVI parser · Advisory · pjsip/pjproject · GitHub x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2026-77396
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