CVE-2024-7264
Published: 31 July 2024
libcurl's ASN1 parser code has the `GTime2str()` function, used for parsing an ASN.1 Generalized Time field. If given an syntactically incorrect field, the parser might end up using -1 for the length of the *time fraction*, leading to a `strlen()` getting performed on a pointer to a heap buffer area that is not (purposely) null terminated. This flaw most likely leads to a crash, but can also lead to heap contents getting returned to the application when [CURLINFO_CERTINFO](https://curl.se/libcurl/c/CURLINFO_CERTINFO.html) is used.
Notes
| Author | Note |
|---|---|
| rodrigo-zaiden |
seems like it was introduced in commit 3a24cb7bc456366cbc3a03f7ab6d2576105a1f2d (version 7.32.0) |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
curl
Launchpad, Ubuntu, Debian |
bionic |
Released
(7.58.0-2ubuntu3.24+esm5)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
| focal |
Released
(7.68.0-1ubuntu2.23)
|
|
| jammy |
Released
(7.81.0-1ubuntu1.17)
|
|
| noble |
Released
(8.5.0-2ubuntu10.2)
|
|
| trusty |
Released
(7.35.0-1ubuntu2.20+esm18)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
| upstream |
Released
(8.9.1)
|
|
| xenial |
Released
(7.47.0-1ubuntu2.19+esm13)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches:
upstream: https://github.com/curl/curl/commit/27959ecce75cdb2809c0bdb3286e60e08fadb519 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |