CVE-2020-10595
libpam-krb5 - security update
描述
pam-krb5 before 4.9 has a buffer overflow that might cause remote code execution in situations involving supplemental prompting by a Kerberos library. It may overflow a buffer provided by the underlying Kerberos library by a single '\0' byte if an attacker responds to a prompt with an answer of a carefully chosen length. The effect may range from heap corruption to stack corruption depending on the structure of the underlying Kerberos library, with unknown effects but possibly including code execution. This code path is not used for normal authentication, but only when the Kerberos library does supplemental prompting, such as with PKINIT or when using the non-standard no_prompt PAM configuration option.
如何修補 CVE-2020-10595
要修補 CVE-2020-10595,請將受影響套件升級到下列已修補版本。
- —升級至 4.9-1 或更新版本
- —升級至 4.6-3+deb8u1 或更新版本
- —升級至 4.7-4+deb9u1 或更新版本
CVE-2020-10595 正在被利用嗎?
低 — EPSS 為 4.8%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 4.9-1
- from 0, < 4.6-3+deb8u1
- from 0, < 4.7-4+deb9u1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |