asterisk certified_asterisk 空指针解引用

CVE编号

CVE-2021-46837

利用情况

暂无

补丁情况

N/A

披露时间

2022-08-30
漏洞描述
res_pjsip_t38 in Sangoma Asterisk 16.x before 16.16.2, 17.x before 17.9.3, and 18.x before 18.2.2, and Certified Asterisk before 16.8-cert7, allows an attacker to trigger a crash by sending an m=image line and zero port in a response to a T.38 re-invite initiated by Asterisk. This is a re-occurrence of the CVE-2019-15297 symptoms but not for exactly the same reason. The crash occurs because there is an append operation relative to the active topology, but this should instead be a replace operation.
解决建议
建议您更新当前系统或软件至最新版,完成漏洞的修复。
受影响软件情况
# 类型 厂商 产品 版本 影响面
1
运行在以下环境
应用 asterisk certified_asterisk 16.8.0 -
运行在以下环境
应用 digium asterisk * From
(including)
16.0.0
Up to
(excluding)
16.16.2
运行在以下环境
应用 digium asterisk * From
(including)
17.0.0
Up to
(excluding)
17.9.3
运行在以下环境
应用 digium asterisk * From
(including)
18.0.0
Up to
(excluding)
18.2.2
运行在以下环境
系统 debian_10 asterisk * Up to
(excluding)
1:16.28.0~dfsg-0+deb10u1
运行在以下环境
系统 debian_11 asterisk * Up to
(excluding)
1:16.28.0~dfsg-0+deb11u1
CVSS3评分
6.5
  • 攻击路径
    网络
  • 攻击复杂度
  • 权限要求
  • 影响范围
    未更改
  • 用户交互
  • 可用性
  • 保密性
  • 完整性
CWE-ID 漏洞类型
CWE-476 空指针解引用
阿里云安全产品覆盖情况