CVE-2021-46828
published 2022-07-20CVE-2021-46828: In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled…
PriorityP339high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.09%
79.3th percentile
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | libtirpc | < libtirpc 1.3.2-2.1 (bookworm) | libtirpc 1.3.2-2.1 (bookworm) |
| libtirpc_project | libtirpc | < 1.3.3 | 1.3.3 |
| libtirpc_project | libtirpc | >= 0 < 1.3.1-1+deb11u1 | 1.3.1-1+deb11u1 |
| libtirpc_project | libtirpc | >= 0 < 1.3.2-2.1 | 1.3.2-2.1 |
| libtirpc_project | libtirpc | >= 0 < 1.3.2-2.1 | 1.3.2-2.1 |
| libtirpc_project | libtirpc | >= 0 < 1.3.2-2.1 | 1.3.2-2.1 |
| msrc | cbl2_libtirpc_1.3.3-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_1.0_arm | — | — |
| msrc | cbl_mariner_1.0_x64 | — | — |
| msrc | cm1_libtirpc_1.1.4-5_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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CISA ICS
Siemens SCALANCE XCM332
cisa_ics·2023-04-13·CVSS 7.5
[HIGH] Siemens SCALANCE XCM332
ICS Advisory
##
Siemens SCALANCE XCM332
Release DateApril 13, 2023
Alert CodeICSA-23-103-09
As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens' ProductCERT Security Advisories (CERT Services | Services | Siemens Global).
## 1. EXECUTIVE SUMMARY
- CVSS v3 9.8
- ATTENTION: Exploitable remotely/low attack complexity
- Vendor: Siemens
- Equipment: SCALANCE XCM332
- Vulnerabilities: Allocation of Resources Without Limits or Throttling, Use After Free, Concurrent Execution Using Shared Resource with Improper Synchronization ('Race Condition'), Incorrect Default Permissions, Out-of-
Ubuntu
libtirpc vulnerability
vendor_ubuntu·2022-07-28
CVE-2021-46828 libtirpc vulnerability
Title: libtirpc vulnerability
Summary: libtirpc could be made to denial of service if it received a specially
crafted input.
It was discovered that libtirpc incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
libtirpc: DoS vulnerability with lots of connections
vendor_redhat·2022-07-20·CVSS 7.5
CVE-2021-46828 [HIGH] CWE-400 libtirpc: DoS vulnerability with lots of connections
libtirpc: DoS vulnerability with lots of connections
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
A denial of service (DoS) vulnerability was found in libtirpc. This flaw allows a remote attacker to exhaust the file descriptors of a process that uses libtirpc due to mishandling idle TCP connections. This issue leads to a svc_run infinite loop without accepting new connections.
Package: libtirpc (Red Hat Enterprise Linux 6) - Out of support scope
Package: libtirpc (Red Hat Enterprise Linux 7) - Out of support scope
Microsoft
In libtirpc before 1.3.3rc1 remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can in turn lead to an svc_run infinit
vendor_msrc·2022-07-12·CVSS 7.5
CVE-2021-46828 [HIGH] CWE-755 In libtirpc before 1.3.3rc1 remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can in turn lead to an svc_run infinit
In libtirpc before 1.3.3rc1 remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can in turn lead to an svc_run infinite loop without accepting new connections.
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 p
Debian
CVE-2021-46828: libtirpc - In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors...
vendor_debian·2021·CVSS 7.5
CVE-2021-46828 [HIGH] CVE-2021-46828: libtirpc - In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors...
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
Scope: local
bookworm: resolved (fixed in 1.3.2-2.1)
bullseye: resolved (fixed in 1.3.1-1+deb11u1)
forky: resolved (fixed in 1.3.2-2.1)
sid: resolved (fixed in 1.3.2-2.1)
trixie: resolved (fixed in 1.3.2-2.1)
GHSA
GHSA-x62c-6mxr-74fh: In libtirpc before 1
ghsa_unreviewed·2022-07-21
CVE-2021-46828 [HIGH] CWE-755 GHSA-x62c-6mxr-74fh: In libtirpc before 1
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
OSV
CVE-2021-46828: In libtirpc before 1
osv·2022-07-20·CVSS 7.5
CVE-2021-46828 [HIGH] CVE-2021-46828: In libtirpc before 1
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=86529758570cef4c73fb9b9c4104fdc510f701edhttps://lists.debian.org/debian-lts-announce/2022/08/msg00004.htmlhttps://security.gentoo.org/glsa/202210-33https://security.netapp.com/advisory/ntap-20221007-0004/https://www.debian.org/security/2022/dsa-5200http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=86529758570cef4c73fb9b9c4104fdc510f701edhttps://lists.debian.org/debian-lts-announce/2022/08/msg00004.htmlhttps://security.gentoo.org/glsa/202210-33https://security.netapp.com/advisory/ntap-20221007-0004/https://www.debian.org/security/2022/dsa-5200
2022-07-20
Published