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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- Debian / debian_linux11.0 – 11.0
- Debian / debian_linux10.0 – 10.0
- fedoraproject / fedora36 – 36
- haxx / curl7.57.0 – 7.88.0
- NetApp / Clustered Data ONTAP
- NetApp / h300s_firmware
- NetApp / h410s_firmware
- NetApp / h500s_firmware
- NetApp / h700s_firmware
- Splunk / Universal Forwarder8.2.0 – 8.2.12
- Splunk / Universal Forwarder9.1.0 – 9.1.0
References
- MISChttps://hackerone.com/reports/1826048
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2023/02/msg00035.html
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BQKE6TXYDHOTFHLTBZ5X73GTKI7II5KO/
- VENDOR_ADVISORYhttps://www.debian.org/security/2023/dsa-5365
- MISChttps://security.netapp.com/advisory/ntap-20230309-0006/
- MISChttps://security.gentoo.org/glsa/202310-12
Updated 15m ago · 8 sources