Detections
Analytics
SCA: security update for nanopb (GHSA-85rr-4rh9-hhwh)
high Tenable Cloud Security Plugin ID 412451
Description
There are packages installed that are affected by a vulnerability referenced in the following CVE:- Nanopb is a small code-size Protocol Buffers implementation. In Nanopb before versions 0.4.4 and 0.3.9.7,
decoding specifically formed message can leak memory if dynamic allocation is enabled and an oneof field
contains a static submessage that contains a dynamic field, and the message being decoded contains the
submessage multiple times. This is rare in normal messages, but it is a concern when untrusted data is
parsed. This is fixed in versions 0.3.9.7 and 0.4.4. The following workarounds are available: 1) Set the
option `no_unions` for the oneof field. This will generate fields as separate instead of C union, and
avoids triggering the problematic code. 2) Set the type of the submessage field inside oneof to
`FT_POINTER`. This way the whole submessage will be dynamically allocated and the problematic code is not
executed. 3) Use an arena allocator for nanopb, to make sure all memory can be released afterwards.
(CVE-2020-26243)
See Also
Plugin Details
Severity: High
ID: 412451
Version: Revision 1.4
Type: Local
Family: SCA Checks
Published: 1/23/2025
Updated: 7/2/2026
Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security
Risk Information
VPR
Risk Factor: Low
Score: 3
Percentile: 23.18
Vendor
Vendor Severity: Medium
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.4
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2020-26243
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/25/2020
Vulnerability Publication Date: 11/25/2020
Reference Information
CVE: CVE-2020-26243