VulnerabilityModified
CVE-2021-36155
LengthPrefixedMessageReader in gRPC Swift 1.1.0 and earlier allocates buffers of arbitrary length, which allows remote attackers to cause uncontrolled resource consumption and deny service.
HIGH 7.5EPSS 2.08%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
LengthPrefixedMessageReader in gRPC Swift 1.1.0 and earlier allocates buffers of arbitrary length, which allows remote attackers to cause uncontrolled resource consumption and deny service.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.08% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-770
- Affected
- linuxfoundation/grpc swift
- Source
- cve@mitre.org
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35303Mailing List, Third Party Advisory
- https://github.com/grpc/grpc-swift/releasesRelease Notes, Third Party Advisory
- https://github.com/grpc/grpc-swift/security/advisories/GHSA-rxmj-hg9v-vp3pThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35303Mailing List, Third Party Advisory
- https://github.com/grpc/grpc-swift/releasesRelease Notes, Third Party Advisory
- https://github.com/grpc/grpc-swift/security/advisories/GHSA-rxmj-hg9v-vp3pThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.