Nanopb is a small code-size Protocol Buffers implementation in ansi C. In Nanopb before versions 0.3.9.8 and 0.4.5, decoding a specifically formed message can cause invalid `free()` or `realloc()` calls if the message type contains an `oneof` field, and the `oneof` directly contains both a pointer field and a non-pointer field. If the message data first contains the non-pointer field and then the pointer field, the data of the non-pointer field is incorrectly treated as if it was a pointer value. Such message data rarely occurs in normal messages, but it is a concern when untrusted data is parsed. This has been fixed in versions 0.3.9.8 and 0.4.5. See referenced GitHub Security Advisory for more information including workarounds.
References
Link | Resource |
---|---|
https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1 | Release Notes Third Party Advisory |
https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261 | Patch Third Party Advisory |
https://github.com/nanopb/nanopb/issues/647 | Exploit Issue Tracking Third Party Advisory |
https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88 | Exploit Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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History
29 Mar 2021, 14:50
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:* | |
CVSS |
v2 : v3 : |
v2 : 5.5
v3 : 7.1 |
References | (CONFIRM) https://github.com/nanopb/nanopb/security/advisories/GHSA-7mv5-5mxh-qg88 - Exploit, Patch, Third Party Advisory | |
References | (MISC) https://github.com/nanopb/nanopb/commit/e2f0ccf939d9f82931d085acb6df8e9a182a4261 - Patch, Third Party Advisory | |
References | (MISC) https://github.com/nanopb/nanopb/blob/c9124132a604047d0ef97a09c0e99cd9bed2c818/CHANGELOG.txt#L1 - Release Notes, Third Party Advisory | |
References | (MISC) https://github.com/nanopb/nanopb/issues/647 - Exploit, Issue Tracking, Third Party Advisory |
23 Mar 2021, 18:53
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2021-03-23 18:15
Updated : 2023-12-10 13:41
NVD link : CVE-2021-21401
Mitre link : CVE-2021-21401
CVE.ORG link : CVE-2021-21401
JSON object : View
Products Affected
nanopb_project
- nanopb
CWE
CWE-763
Release of Invalid Pointer or Reference