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CVE-2023-39193— Kernel: netfilter: xtables sctp out-of-bounds read in match_flags()

CVSS 6.1 · Medium EPSS 0.01% · P1
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I. Basic Information for CVE-2023-39193

Vulnerability Information
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Vulnerability Title
Kernel: netfilter: xtables sctp out-of-bounds read in match_flags()
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于未验证flag_count字段。攻击者利用该漏洞导致系统崩溃或信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 8 0:4.18.0-553.rt7.342.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::realtime
Red HatRed Hat Enterprise Linux 8 0:4.18.0-553.el8_10 ~ * cpe:/a:redhat:enterprise_linux:8::crb
Red HatRed Hat Enterprise Linux 9 0:5.14.0-427.13.1.el9_4 ~ * cpe:/a:redhat:enterprise_linux:9::nfv
Red HatRed Hat Enterprise Linux 9 0:5.14.0-427.13.1.el9_4 ~ * cpe:/a:redhat:enterprise_linux:9::nfv
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-39193

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III. Intelligence Information for CVE-2023-39193

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Same Patch Batch · Red Hat · 2023-10-09 · 4 CVEs total

CVE-2023-391926.7 MEDIUMKernel: netfilter: xtables out-of-bounds read in u32_match_it()
CVE-2023-391895.1 MEDIUMKernel: netfilter: nftables out-of-bounds read in nf_osf_match_one()
CVE-2023-391943.2 LOWKernel: xfrm: out-of-bounds read in __xfrm_state_filter_match()

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 8
Same vendor: Red Hat
Same weakness: CWE-125

V. Comments for CVE-2023-39193

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