Bugzilla – Bug 1222835
VUL-0: CVE-2024-29902: cosign: Malicious attachments can cause system-wide denial of service
Last modified: 2024-06-18 12:30:38 UTC
Cosign provides code signing and transparency for containers and binaries. Prior to version 2.2.4, a remote image with a malicious attachment can cause denial of service of the host machine running Cosign. This can impact other services on the machine that rely on having memory available such as a Redis database which can result in data loss. It can also impact the availability of other services on the machine that will not be available for the duration of the machine denial. The root cause of this issue is that Cosign reads the attachment from a remote image entirely into memory without checking the size of the attachment first. As such, a large attachment can make Cosign read a large attachment into memory; If the attachments size is larger than the machine has memory available, the machine will be denied of service. The Go runtime will make a SigKill after a few seconds of system-wide denial. This issue can allow a supply-chain escalation from a compromised registry to the Cosign user: If an attacher has compromised a registry or the account of an image vendor, they can include a malicious attachment and hurt the image consumer. Version 2.2.4 contains a patch for the vulnerability. References: http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-29902 https://www.cve.org/CVERecord?id=CVE-2024-29902 https://github.com/google/go-containerregistry/blob/a0658aa1d0cc7a7f1bcc4a3af9155335b6943f40/pkg/v1/remote/layer.go#L36-L40 https://github.com/sigstore/cosign/blob/9bc3ee309bf35d2f6e17f5d23f231a3d8bf580bc/pkg/oci/remote/remote.go#L228-L239 https://github.com/sigstore/cosign/commit/629f5f8fa672973503edde75f84dcd984637629e https://github.com/sigstore/cosign/releases/tag/v2.2.4 https://github.com/sigstore/cosign/security/advisories/GHSA-88jx-383q-w4qc https://bugzilla.redhat.com/show_bug.cgi?id=2274508
Affected: - SUSE:SLE-15-SP4:Update - openSUSE:Factory
This is an autogenerated message for OBS integration: This bug (1222835) was mentioned in https://build.opensuse.org/request/show/1167811 Factory / cosign
SUSE-SU-2024:1486-1: An update that solves two vulnerabilities and contains one feature can now be installed. Category: security (moderate) Bug References: 1222835, 1222837 CVE References: CVE-2024-29902, CVE-2024-29903 Jira References: SLE-23879 Maintenance Incident: [SUSE:Maintenance:33590](https://smelt.suse.de/incident/33590/) Sources used: openSUSE Leap 15.4 (src): cosign-2.2.4-150400.3.20.1 openSUSE Leap 15.5 (src): cosign-2.2.4-150400.3.20.1 Basesystem Module 15-SP5 (src): cosign-2.2.4-150400.3.20.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Fixed and released.
SUSE-SU-2024:1486-2: An update that solves two vulnerabilities and contains one feature can now be installed. Category: security (moderate) Bug References: 1222835, 1222837 CVE References: CVE-2024-29902, CVE-2024-29903 Jira References: SLE-23879 Maintenance Incident: [SUSE:Maintenance:33590](https://smelt.suse.de/incident/33590/) Sources used: openSUSE Leap 15.6 (src): cosign-2.2.4-150400.3.20.1 Basesystem Module 15-SP6 (src): cosign-2.2.4-150400.3.20.1 NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.