CVE-2022-24903
published 2022-05-06CVE-2022-24903: Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used…
PriorityP352high8.1CVSS 3.1
AVNACHPRNUINSUCHIHAH
EPSS
3.82%
88.9th percentile
Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible or at least highly complex. Octet-counted framing is one of two potential framing modes. It is relatively uncommon, but enabled by default on receivers. Modules `imtcp`, `imptcp`, `imgssapi`, and `imhttp` are used for regular syslog message reception. It is best practice not to directly expose them to the public. When this practice is followed, the risk is considerably lower. Module `imdiag` is a diagnostics module primarily intended for testbench runs. We do not expect it to be present on any production installation. Octet-counted framing is not very common. Usually, it needs to be specifically enabled at senders. If users do not need it, they can turn it off for the most important modules. This will mitigate the vulnerability.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | rsyslog | < rsyslog 8.2204.1-1 (bookworm) | rsyslog 8.2204.1-1 (bookworm) |
| fedoraproject | fedora | — | — |
| msrc | cbl2_rsyslog_8.2204.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cm1_rsyslog_8.37.0-7_on_cbl_mariner_1.0 | — | — |
| rsyslog | rsyslog | < 8.2204.1 | 8.2204.1 |
| rsyslog | rsyslog | >= 0 < 8.2102.0-2+deb11u1 | 8.2102.0-2+deb11u1 |
| rsyslog | rsyslog | >= 0 < 8.2204.1-1 | 8.2204.1-1 |
| rsyslog | rsyslog | >= 0 < 8.2204.1-1 | 8.2204.1-1 |
| rsyslog | rsyslog | >= 0 < 8.2204.1-1 | 8.2204.1-1 |
CVSS provenance
nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.06.8MEDIUMAV:N/AC:M/Au:N/C:P/I:P/A:P
osv8.1HIGH
vendor_debian8.1HIGH
vendor_msrc8.1HIGH
vendor_oracle8.1HIGH
vendor_redhat8.1HIGH
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CISA ICS
Siemens RUGGEDCOM ROX
cisa_ics·2023-07-13
Siemens RUGGEDCOM ROX
ICS Advisory
##
Siemens RUGGEDCOM ROX
Release DateJuly 13, 2023
Alert CodeICSA-23-194-01
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely / low attack complexity
- Vendor: Siemens
- Equipment: RUGGEDCOM ROX
- Vulnerabilities: Cleartext Transmission of Sensitive Information, Command Injection, Improper Authentication, Classic Buffer Overflow, Uncontrolled Resource Consumption, Improper Certificate Validation, Cross-Site Request Forgery (CSRF), Improper Input Validation, Incorrect Default Permissions, Cross-site Scripting, Inadequate Encryption Strength, Use of a Broken or Risky Cryptographic Algorithm.
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow an attacker to send a malformed HTTP packet c
Oracle
Oracle Oracle Communications Risk Matrix: Platform (Multiple) — CVE-2022-24903
vendor_oracle·2023-01-15·CVSS 8.1
CVE-2022-24903 [HIGH] Oracle Oracle Communications Risk Matrix: Platform (Multiple) — CVE-2022-24903
Oracle Oracle Communications Risk Matrix: Platform (Multiple) vulnerability
CVE: CVE-2022-24903
CVSS: 8.1
Protocol: SYSLOG
Remote exploit: Yes
Affected versions: Network
Advisory: cpujan2023 (JAN 2023)
Ubuntu
Rsyslog vulnerability
vendor_ubuntu·2022-05-24
CVE-2022-24903 Rsyslog vulnerability
Title: Rsyslog vulnerability
Summary: Rsyslog could be made to crash if it received a specially crafted request.
USN-5404-1 addressed a vulnerability in Rsyslog. This update
provides the corresponding update for Ubuntu 16.04 ESM.
Original advisory details:
Pieter Agten discovered that Rsyslog incorrectly handled certain requests.
An attacker could possibly use this issue to cause a crash.
Instructions: In general, a standard system update will make all the necessary changes.
Microsoft
Buffer overflow in TCP syslog server (receiver) components in rsyslog
vendor_msrc·2022-05-10·CVSS 8.1
CVE-2022-24903 [HIGH] CWE-1284 Buffer overflow in TCP syslog server (receiver) components in rsyslog
Buffer overflow in TCP syslog server (receiver) components in rsyslog
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
GitHub_M: GitHub_M
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Refe
Ubuntu
Rsyslog vulnerability
vendor_ubuntu·2022-05-05
CVE-2022-24903 Rsyslog vulnerability
Title: Rsyslog vulnerability
Summary: Rsyslog could be made to crash if it received a specially crafted request.
Pieter Agten discovered that Rsyslog incorrectly handled certain requests.
An attacker could possibly use this issue to cause a crash.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
rsyslog: Heap-based overflow in TCP syslog server
vendor_redhat·2022-05-05·CVSS 8.1
CVE-2022-24903 [HIGH] CWE-787 rsyslog: Heap-based overflow in TCP syslog server
rsyslog: Heap-based overflow in TCP syslog server
Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible o
Debian
CVE-2022-24903: rsyslog - Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog recep...
vendor_debian·2022·CVSS 8.1
CVE-2022-24903 [HIGH] CVE-2022-24903: rsyslog - Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog recep...
Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible or at least highly complex. Octet-counted framing is
OSV
CVE-2022-24903: Rsyslog is a rocket-fast system for log processing
osv·2022-05-06·CVSS 8.1
CVE-2022-24903 [HIGH] CVE-2022-24903: Rsyslog is a rocket-fast system for log processing
Rsyslog is a rocket-fast system for log processing. Modules for TCP syslog reception have a potential heap buffer overflow when octet-counted framing is used. This can result in a segfault or some other malfunction. As of our understanding, this vulnerability can not be used for remote code execution. But there may still be a slight chance for experts to do that. The bug occurs when the octet count is read. While there is a check for the maximum number of octets, digits are written to a heap buffer even when the octet count is over the maximum, This can be used to overrun the memory buffer. However, once the sequence of digits stop, no additional characters can be added to the buffer. In our opinion, this makes remote exploits impossible or at least highly complex. Octet-counted framing is
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/rsyslog/rsyslog/commit/f211042ecbb472f9d8beb4678a65d272b6f07705https://github.com/rsyslog/rsyslog/security/advisories/GHSA-ggw7-xr6h-mmr8https://lists.debian.org/debian-lts-announce/2022/05/msg00028.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMNNXLCU2UORRVSZO24HL4KMVPK5PHVW/https://security.netapp.com/advisory/ntap-20221111-0002/https://www.debian.org/security/2022/dsa-5150https://github.com/rsyslog/rsyslog/commit/f211042ecbb472f9d8beb4678a65d272b6f07705https://github.com/rsyslog/rsyslog/security/advisories/GHSA-ggw7-xr6h-mmr8https://lists.debian.org/debian-lts-announce/2022/05/msg00028.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMNNXLCU2UORRVSZO24HL4KMVPK5PHVW/https://security.netapp.com/advisory/ntap-20221111-0002/https://www.debian.org/security/2022/dsa-5150
2022-05-06
Published