CVE-2013-4206
putty - several
EPSS 2.5%
描述
Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting operations during modular multiplication.
如何修補 CVE-2013-4206
要修補 CVE-2013-4206,請將受影響套件升級到下列已修補版本。
- Debian/filezilla—升級至 3.7.3-1 或更新版本
- Debian/putty—升級至 0.63-1 或更新版本
- Debian/putty—升級至 0.60+2010-02-20-1+squeeze2 或更新版本
CVE-2013-4206 正在被利用嗎?
低 — EPSS 為 2.5%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 3.7.3-1
- from 0, < 0.63-1
- from 0, < 0.60+2010-02-20-1+squeeze2