未評価
An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for hol...
CVE-2019-12521
SecPulse初出
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2019-12521 squid 修正版: 4.11-1
原文の説明 取得元が公開している説明をそのまま載せています (多くは英語)。
An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.
参照URL
- advisory lists.opensuse.org
- advisory gitlab.com
- advisory lists.debian.org
- advisory security.gentoo.org
- advisory security.netapp.com
- advisory usn.ubuntu.com
- advisory debian.org
- patch openwall.com