CVE-2023-23916
Published: August 31, 2023Last modified: August 31, 2023
Description
An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.
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 |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | curl | Not affected (8.2.1-r0) |
| Stream | curl | Not affected (8.2.1-r0) |
References
- https://hackerone.com/reports/1826048
- https://lists.debian.org/debian-lts-announce/2023/02/msg00035.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/
- https://security.gentoo.org/glsa/202310-12
- https://security.netapp.com/advisory/ntap-20230309-0006/
- https://www.debian.org/security/2023/dsa-5365