curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · haxx, fedoraproject, debianNVD modified 2026-10-14 17:17
Affected (CPE criteria) 21
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc622-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc626-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc632-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc636-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc642-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:o:siemens:scalance_sc646-2c_firmware:*:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
References 27
- http://seclists.org/fulldisclosure/2022/Oct/28 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Oct/41 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/02/15/3 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf Patch, Third Party Advisory
- https://hackerone.com/reports/1570651 Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6BR4MTI3CEWK2YU2HQZUW5FAS3FEY/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220915-0003/ Third Party Advisory
- https://support.apple.com/kb/HT213488 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5197 Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Oct/28 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2022/Oct/41 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2023/02/15/3 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-333517.pdf Patch, Third Party Advisory
- https://hackerone.com/reports/1570651 Exploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/08/msg00017.html Mailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BEV6BR4MTI3CEWK2YU2HQZUW5FAS3FEY/ Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202212-01 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220915-0003/ Third Party Advisory
- https://support.apple.com/kb/HT213488 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5197 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-333517.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-419740.html
- https://cert-portal.siemens.com/productcert/html/ssa-558014.html
- https://cert-portal.siemens.com/productcert/html/ssa-942865.html