CVE-2024-6197
描述
libcurl's ASN1 parser has this utf8asn1str() function used for parsing an ASN.1 UTF-8 string. Itcan detect an invalid field and return error. Unfortunately, when doing so it also invokes `free()` on a 4 byte localstack buffer. Most modern malloc implementations detect this error and immediately abort. Some however accept the input pointer and add that memory to its list of available chunks. This leads to the overwriting of nearby stack memory. The content of the overwrite is decided by the `free()` implementation; likely to be memory pointers and a set of flags. The most likely outcome of exploting this flaw is a crash, although it cannot be ruled out that more serious results can be had in special circumstances.
如何修補 CVE-2024-6197
要修補 CVE-2024-6197,請將受影響套件升級到下列已修補版本。
- —升級至 8.9.0-r0 或更新版本
- —升級至 8.9.0-1 或更新版本
CVE-2024-6197 正在被利用嗎?
低 — EPSS 為 4.3%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 8.9.0-r0
- from 0, < 8.9.0-1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |