漏洞描述
The receive_msg function in receive.c in the SMTP daemon in Exim 4.88 and 4.89 allows remote attackers to cause a denial of service (infinite loop and stack exhaustion) via vectors involving BDAT commands and an improper check for a '.' character signifying the end of the content, related to the bdat_getc function.
影响产品
暂无结构化产品信息。
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
www.openwall.comhttp://www.openwall.com/lists/oss-security/2021/05/04/7↗openwall.comhttp://openwall.com/lists/oss-security/2017/11/25/2↗www.securitytracker.comhttp://www.securitytracker.com/id/1039873↗openwall.comhttp://openwall.com/lists/oss-security/2017/11/25/1↗openwall.comhttp://openwall.com/lists/oss-security/2017/11/25/3↗www.debian.orghttps://www.debian.org/security/2017/dsa-4053↗lists.exim.orghttps://lists.exim.org/lurker/message/20171125.034842.d1d75cac.en.html↗bugs.exim.orghttps://bugs.exim.org/show_bug.cgi?id=2201↗