Vulnerability · Published Jul 25, 2023 · Assigned by redhat
CVE-2023-3773Kernel: xfrm: out-of-bounds read of xfrma_mtimer_thresh nlattr
Medium 5.5
In plain English
A medium-severity out-of-bounds read in Red Hat Enterprise Linux 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.3%top 83.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to cause a 4 byte out-of-bounds read of XFRMA_MTIMER_THRESH when parsing netlink attributes, leading to potential leakage of sensitive heap data to userspace.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | linux | 6.1.52-1 | DEBIAN-CVE-2023-3773 |
| Debian:12 | linux | 6.1.52-1 | DSA-5492-1 |
| Debian:13 | linux | 6.4.13-1 | DEBIAN-CVE-2023-3773 |
| Debian:14 | linux | 6.4.13-1 | DEBIAN-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux | 5.15.0-91.101 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux | 5.15.0-91.101 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-allwinner-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1051.56 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-aws | 5.15.0-1051.56 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-aws-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1017.17~22.04.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-aws-6.2 | 6.2.0-1017.17~22.04.1 | USN-6534-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1053.61 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-azure | 5.15.0-1053.61 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1018.18~22.04.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-6.2 | 6.2.0-1018.18~22.04.1 | USN-6534-1 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1053.61.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-fde | 5.15.0-1053.61.1 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-azure-fde-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1018.18~22.04.1.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-azure-fde-6.2 | 6.2.0-1018.18~22.04.1.1 | USN-6534-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1048.56 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-gcp | 5.15.0-1048.56 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-gcp-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-gcp-6.2 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1048.53 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-gke | 5.15.0-1048.53 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1034.40 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-gkeop | 5.15.0-1034.40 | USN-6549-2 |
| Ubuntu:22.04:LTS | linux-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-39.40~22.04.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-hwe-6.2 | 6.2.0-39.40~22.04.1 | USN-6534-3 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1044.47 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-ibm | 5.15.0-1044.47 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1046.52 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-intel-iotg | 5.15.0-1046.52 | USN-6549-4 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1048.53 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-kvm | 5.15.0-1048.53 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-91.101 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-lowlatency | 5.15.0-91.101 | USN-6549-3 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1018.18~22.04.1 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-lowlatency-hwe-6.2 | 6.2.0-1018.18~22.04.1 | USN-6534-3 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1042.42 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-nvidia | 5.15.0-1042.42 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | 6.2.0-1013.13 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-nvidia-6.2 | 6.2.0-1013.13 | USN-6534-3 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra | 5.15.0-1020.20 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-nvidia-tegra-igx | 5.15.0-1007.7 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-oem-5.17 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-oem-6.0 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1023.23 | USN-6415-1 |
| Ubuntu:22.04:LTS | linux-oem-6.1 | 6.1.0-1023.23 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1049.55 | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-oracle | 5.15.0-1049.55 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1044.47 | USN-6549-1 |
| Ubuntu:22.04:LTS | linux-raspi | 5.15.0-1044.47 | UBUNTU-CVE-2023-3773 |
| Ubuntu:24.04:LTS | linux-raspi-realtime | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-realtime | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-riscv | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-riscv-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-starfive-5.19 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-starfive-6.2 | no fix listed | UBUNTU-CVE-2023-3773 |
| Ubuntu:22.04:LTS | linux-xilinx-zynqmp | 5.15.0-1027.31 | UBUNTU-CVE-2023-3773 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
Weakness: CWE-125 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- RHSA-2023:6583 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-3773 vdb-entry, x_refsource_REDHAT
- RHBZ#2218944 issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html x_transferred
- https://www.debian.org/security/2023/dsa-5492 x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html