Cyber Resilience

CVE-2023-32732

Fedoraproject Fedora 37 … 38

Published
09 June 2023
Modified
13 February 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.3
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0053 42th percentile
Risk Priority 45 floored blend · peak EPSS

Summary

CVE-2023-32732 is a medium-severity Expected Behavior Violation (CWE-440) vulnerability in Fedoraproject Fedora. Its CVSS base score is 5.3 (Medium).

Operationally, ranked at the 42th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

gRPC contains a vulnerability whereby a client can cause a termination of connection between a HTTP2 proxy and a gRPC server: a base64 encoding error for `-bin` suffixed headers will result in a disconnection by the gRPC server, but is…

more

typically allowed by HTTP2 proxies. We recommend upgrading beyond the commit in https://github.com/grpc/grpc/pull/32309 https://www.google.com/url

CWE(s)
CWE-440NVD-CWE-Other

Related Threats

CVEs Like This One

CVE-2023-32731Same product: Grpc Grpc
CVE-2024-7246Same product: Grpc Grpc
CVE-2023-1428Same product: Grpc Grpc
CVE-2023-4785Same product: Grpc Grpc
CVE-2023-33953Same product: Grpc Grpc
CVE-2024-11407Same product: Grpc Grpc
CVE-2026-33186Same product: Grpc Grpc
CVE-2024-23313Same product: Fedoraproject Fedora
CVE-2024-3833Same product: Fedoraproject Fedora
CVE-2024-31208Same product: Fedoraproject Fedora

Affected Assets

grpc
grpc
≤ 1.53.0
fedoraproject
fedora
37, 38

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-6 Security and Privacy Function Verification
addresses: CWE-440

Verification of security function operation directly detects deviations from expected behavior.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 full match
prevents

Secure SDLC practices directly enforce specification compliance and catch expected-behavior violations during development.

ID.IM-02 partial match
prevents

Security testing and exercises help discover behavior deviations before deployment.

ID.RA-01 partial match
prevents

Vulnerability identification can surface spec-violating flaws, while eliminating the weakness reduces some vulnerability backlog.

PR.PS-02 partial match
prevents

Routine software maintenance and patching can remediate discovered specification violations.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development and acceptance validates that functions behave as specified.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle mandates verification against specifications, directly reducing expected-behavior violations.

A.8.26 Application security requirements partial match
prevents

Application security requirements explicitly define expected behavior that must be met.

A.8.28 Secure coding partial match
prevents

Secure coding practices enforce adherence to functional specifications during implementation.

A.8.32 Change management partial match
finds

Change management can catch specification deviations introduced by modifications.

A.5.37 Documented operating procedures none match
none

Documented operating procedures reduce the chance that functions deviate from intended behavior.

References