CVE-2022-33070

Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function...

5.5 MediumFix available

Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function parse_tag_and_wiretype in protobuf-c/protobuf-c.c. This vulnerability allows attackers to cause a Denial of Service (DoS) via unspecified vectors.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

1.11%Up 0.2 points since Jun 23, 2022

What each source reports

NVD Score used 5.5

Record: CVE-2022-33070
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Updated: 2026-11-02

CVE List No score

Record: CVE-2022-33070
Updated: 2026-11-02

EUVDEUVD-2022-36127 No score

Record: EUVD-2022-36127
Updated: 2026-11-02

GitHub AdvisoriesGHSA-xcrq-6j7j-784j 5.5

Protobuf-c v1.4.0 was discovered to contain an invalid arithmetic shift via the function...

Record: GHSA-xcrq-6j7j-784j
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVALPINE-CVE-2022-33070 5.5

Record: ALPINE-CVE-2022-33070
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSVAZL-9973 5.5

CVE-2022-33070 affecting package protobuf-c for versions less than 1.4.0-2

Record: AZL-9973
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

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OSVBELL-CVE-2022-33070 5.5

CVE-2022-33070 does not affect BellSoft software

Record: BELL-CVE-2022-33070
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-33070 5.5

Record: DEBIAN-CVE-2022-33070
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-03

OSVOESA-2022-1789 5.5

protobuf-c security update

This is protobuf-c, a C implementation of the Google Protocol Buffers data serialization format.

Security Fix(es):

Record: OESA-2022-1789
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVOESA-2022-1904 5.5

sudo security update

Sudo is a program designed to allow a sysadmin to give limited root privileges to users and log root activity. The basic philosophy is to give as few privileges as possible but still allow people to get their work done.

Security Fix(es):

Record: OESA-2022-1904
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-33070 5.5

Record: UBUNTU-CVE-2022-33070
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV No score

Record: CVE-2022-33070
Updated: 2026-11-02

OSVopenSUSE-SU-2024:12175-1 No score

libprotobuf-c-devel-1.4.0-3.1 on GA media

These are all security issues fixed in the libprotobuf-c-devel-1.4.0-3.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:12175-1
Updated: 2026-11-02

OSVUSN-5531-1 No score

protobuf-c vulnerability

Pietro Borrello discovered that protobuf-c contained an invalid arithmetic shift. This vulnerability allowed attackers to cause a denial of service (system crash) via unspecified vectors (CVE-2022-33070).

It was discovered that protobuf-c contained an unsigned integer overflow. This vulnerability allowed attackers to cause a denial of service (system crash) via unspecified vectors.

Todd Miller discovered that protobuf-c contained a possible NULL dereference. This could cause a vulnerability that allowed attackers to cause a denial of service (system crash) via unspecified vectors.

Record: USN-5531-1
Updated: 2026-11-02

OSVUSN-5811-1 No score

sudo vulnerabilities

Matthieu Barjole and Victor Cutillas discovered that Sudo incorrectly handled user-specified editors when using the sudoedit command. A local attacker that has permission to use the sudoedit command could possibly use this issue to edit arbitrary files. (CVE-2023-22809)

It was discovered that the Protobuf-c library, used by Sudo, incorrectly handled certain arithmetic shifts. An attacker could possibly use this issue to cause Sudo to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2022-33070)

Record: USN-5811-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`protobuf-c` Alpine:v3.17	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.18	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.19	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.20	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.21	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.22	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.23	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Alpine:v3.24	before 1.4.1-r0	1.4.1-r0
`protobuf-c` Azure Linux:2	before 1.4.0-2	1.4.0-2
`protobuf-c` Debian:12	before 1.4.1-1	1.4.1-1

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Affected packages
Package	Affected	Fixed
`protobuf-c` Debian:13	before 1.4.1-1	1.4.1-1
`protobuf-c` Debian:14	before 1.4.1-1	1.4.1-1
`protobuf-c` openEuler:22.03-LTS	before 1.4.0-2.oe2203	1.4.0-2.oe2203
`sudo` openEuler:20.03-LTS-SP1	before 1.9.2-6.oe1	1.9.2-6.oe1
`sudo` openEuler:20.03-LTS-SP3	before 1.9.2-6.oe1	1.9.2-6.oe1
`sudo` openEuler:22.03-LTS	before 1.9.8p2-3.oe2203	1.9.8p2-3.oe2203
`pidgin` Ubuntu:14.04:LTS	All versions, plus listed versions 1:2.10.7-0ubuntu4.11:2.10.7-0ubuntu4.21:2.10.9-0ubuntu11:2.10.9-0ubuntu21:2.10.9-0ubuntu3 Show 4 moreShow less 1:2.10.9-0ubuntu3.11:2.10.9-0ubuntu3.21:2.10.9-0ubuntu3.31:2.10.9-0ubuntu3.4	None known
`protobuf-c` Ubuntu:14.04:LTS	All versions, plus listed versions 0.14-1ubuntu10.15-10.15-1build1	None known
`argyll` Ubuntu:16.04:LTS	All versions, plus listed versions 1.7.0+repack-41.8.2+repack-11.8.3+repack-11.8.3+repack-2	None known
`libgadu` Ubuntu:16.04:LTS	All versions, plus listed versions 1:1.12.1-21:1.12.1-2build1	None known
`ocserv` Ubuntu:16.04:LTS	All versions, plus listed versions 0.10.7-10.10.10-10.10.10-1ubuntu10.10.11-10.10.11-1build1	None known
`pidgin` Ubuntu:16.04:LTS	All versions, plus listed versions 1:2.10.11-0ubuntu41:2.10.11-0ubuntu51:2.10.12-0ubuntu11:2.10.12-0ubuntu21:2.10.12-0ubuntu3 Show 4 moreShow less 1:2.10.12-0ubuntu41:2.10.12-0ubuntu51:2.10.12-0ubuntu5.11:2.10.12-0ubuntu5.2	None known
`protobuf-c` Ubuntu:16.04:LTS	All versions, plus listed versions 1.0.2-1build21.1.1-11.2.1-1	None known
`argyll` Ubuntu:18.04:LTS	All versions, plus listed versions 1.9.2+repack-11.9.2+repack-22.0.0+repack-1build1	None known
`libgadu` Ubuntu:18.04:LTS	All versions, plus listed versions 1:1.12.2-21:1.12.2-3	None known
`libsignal-protocol-c` Ubuntu:18.04:LTS	All versions, plus listed versions 2.3.1+git20171007-22.3.1+git20171007-3	None known
`ocserv` Ubuntu:18.04:LTS	All versions, plus listed versions 0.11.6-20.11.9-10.11.9-1build1	None known
`pidgin` Ubuntu:18.04:LTS	All versions, plus listed versions 1:2.12.0-1ubuntu21:2.12.0-1ubuntu4	None known
`protobuf-c` Ubuntu:18.04:LTS	All versions, plus listed versions 1.2.1-2	None known
`protobuf-c` Ubuntu:20.04:LTS	before 1.3.3-1ubuntu0.1, plus listed versions 1.3.1-1build11.3.2-11.3.3-1	1.3.3-1ubuntu0.1
`argyll` Ubuntu:20.04:LTS	All versions, plus listed versions 2.0.1+repack-1	None known
`ccextractor` Ubuntu:20.04:LTS	All versions, plus listed versions 0.87+ds1-1	None known
`libgadu` Ubuntu:20.04:LTS	All versions, plus listed versions 1:1.12.2-31:1.12.2-4	None known
`libsignal-protocol-c` Ubuntu:20.04:LTS	All versions, plus listed versions 2.3.2-2	None known
`ocserv` Ubuntu:20.04:LTS	All versions, plus listed versions 0.12.2-3build10.12.2-3build20.12.5-10.12.6-1	None known
`pidgin` Ubuntu:20.04:LTS	All versions, plus listed versions 1:2.13.0-2.2ubuntu11:2.13.0-2.2ubuntu21:2.13.0-2.2ubuntu31:2.13.0-2.2ubuntu4	None known
`argyll` Ubuntu:22.04:LTS	All versions, plus listed versions 2.0.1+repack-22.2.0+repack-12.2.0+repack-1build1	None known
`ccextractor` Ubuntu:22.04:LTS	All versions, plus listed versions 0.88+ds1-10.93+ds2-10.93+ds2-1ubuntu10.93+ds2-2	None known
`libgadu` Ubuntu:22.04:LTS	All versions, plus listed versions 1:1.12.2-51:1.12.2-6	None known
`libpg-query` Ubuntu:22.04:LTS	All versions, plus listed versions 13-2.1.0-113-2.1.0-2	None known
`libsignal-protocol-c` Ubuntu:22.04:LTS	All versions, plus listed versions 2.3.3-1	None known
`ocserv` Ubuntu:22.04:LTS	All versions, plus listed versions 1.1.2-21.1.3-1	None known
`pidgin` Ubuntu:22.04:LTS	All versions, plus listed versions 1:2.14.1-1ubuntu11:2.14.8-1ubuntu11:2.14.8-1ubuntu21:2.14.8-1ubuntu2.1	None known
`protobuf-c` Ubuntu:22.04:LTS	before 1.3.3-1ubuntu2.1, plus listed versions 1.3.3-1build21.3.3-1ubuntu11.3.3-1ubuntu2	1.3.3-1ubuntu2.1
`sudo` Ubuntu:22.04:LTS	before 1.9.9-1ubuntu2.2, plus listed versions 1.9.5p2-3ubuntu21.9.9-1ubuntu21.9.9-1ubuntu2.1	1.9.9-1ubuntu2.2
`argyll` Ubuntu:24.04:LTS	All versions, plus listed versions 2.3.1+repack-1ubuntu23.1.0+repack-13.1.0+repack-1build23.1.0+repack-1build33.1.0+repack-1build4	None known
`ccextractor` Ubuntu:24.04:LTS	All versions, plus listed versions 0.94+ds1-30.94+ds1-3build20.94+ds1-3build3	None known
`libgadu` Ubuntu:24.04:LTS	All versions, plus listed versions 1:1.12.2-61:1.12.2-6.11:1.12.2-6.1build11:1.12.2-6.1build2	None known
`libpg-query` Ubuntu:24.04:LTS	All versions, plus listed versions 15-4.2.3-115-4.2.3-216-5.1.0-2	None known
`libsignal-protocol-c` Ubuntu:24.04:LTS	All versions, plus listed versions 2.3.3-3	None known
`ocserv` Ubuntu:24.04:LTS	All versions, plus listed versions 1.2.0-11.2.1-11.2.2-11.2.4-11.2.4-1build11.2.4-1build2	None known
`pidgin` Ubuntu:24.04:LTS	All versions, plus listed versions 1:2.14.12-1ubuntu11:2.14.12-1ubuntu21:2.14.13-1ubuntu11:2.14.13-1ubuntu2	None known
`argyll` Ubuntu:25.10	All versions, plus listed versions 3.1.0+repack-1.13.3.0+repack-1	None known
`libgadu` Ubuntu:25.10	All versions, plus listed versions 1:1.12.2-6.1build21:1.12.2-6.1build3	None known
`libpg-query` Ubuntu:25.10	All versions, plus listed versions 17-6.0.0-117-6.1.0-1	None known
`libsignal-protocol-c` Ubuntu:25.10	All versions, plus listed versions 2.3.3-6	None known
`ocserv` Ubuntu:25.10	All versions, plus listed versions 1.3.0-11.3.0-2	None known
`pidgin` Ubuntu:25.10	All versions, plus listed versions 1:2.14.14-1ubuntu11:2.14.14-1ubuntu2	None known
`argyll` Ubuntu:26.10	All versions, plus listed versions 3.3.0+repack-1.13.5.0+repack-13.5.0+repack-1build1	None known
`libgadu` Ubuntu:26.10	All versions, plus listed versions 1:1.12.2-71:1.12.2-8	None known
`libpg-query` Ubuntu:26.10	All versions, plus listed versions 17-6.2.2-118.0.0-3	None known
`libsignal-protocol-c` Ubuntu:26.10	All versions, plus listed versions 2.3.3-6.1	None known
`ocserv` Ubuntu:26.10	All versions, plus listed versions 1.3.0-31.4.1-11.5.0-11.5.0-1build1	None known
`pidgin` Ubuntu:26.10	All versions, plus listed versions 1:2.14.14-1ubuntu31:2.14.14-1ubuntu4	None known
`argyll` Ubuntu:26.04:LTS	All versions, plus listed versions 3.3.0+repack-13.3.0+repack-1.1	None known
`libgadu` Ubuntu:26.04:LTS	All versions, plus listed versions 1:1.12.2-6.1build31:1.12.2-7	None known
`libpg-query` Ubuntu:26.04:LTS	All versions, plus listed versions 17-6.1.0-117-6.2.0-117-6.2.0-217-6.2.1-117-6.2.2-1	None known
`libsignal-protocol-c` Ubuntu:26.04:LTS	All versions, plus listed versions 2.3.3-62.3.3-6.1	None known
`ocserv` Ubuntu:26.04:LTS	All versions, plus listed versions 1.3.0-21.3.0-3	None known
`pidgin` Ubuntu:26.04:LTS	All versions, plus listed versions 1:2.14.14-1ubuntu21:2.14.14-1ubuntu3	None known
`sudo` Ubuntu:18.04:LTS From an advisory covering 2 CVEs	before 1.8.21p2-3ubuntu1.5, plus listed versions 1.8.20p2-1ubuntu11.8.21p2-2ubuntu11.8.21p2-3ubuntu11.8.21p2-3ubuntu1.11.8.21p2-3ubuntu1.21.8.21p2-3ubuntu1.31.8.21p2-3ubuntu1.4	1.8.21p2-3ubuntu1.5
`sudo` Ubuntu:20.04:LTS From an advisory covering 2 CVEs	before 1.8.31-1ubuntu1.4, plus listed versions 1.8.27-1ubuntu41.8.29-1ubuntu11.8.31-1ubuntu11.8.31-1ubuntu1.11.8.31-1ubuntu1.2	1.8.31-1ubuntu1.4
`sudo` Ubuntu:22.04:LTS From an advisory covering 2 CVEs	before 1.9.9-1ubuntu2.2, plus listed versions 1.9.5p2-3ubuntu21.9.9-1ubuntu21.9.9-1ubuntu2.1	1.9.9-1ubuntu2.2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-33070 is a medium vulnerability (CVSS 5.5) in Protobuf-c Project Protobuf-c, published June 22, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.11%, the 66th percentile. Fixed in protobuf-c 1.4.1-r0.

References

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