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CVE-2020-16119— DCCP CCID structure use-after-free

Quick assessment

Affected
Canonical Linux kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 DCCP CCID 中存在资源管理错误漏洞，该漏洞允许攻击者触发拒绝服务并可能运行代码。

CVSS 6.3 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2020-16119

Vulnerability Information
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Vulnerability Title
DCCP CCID structure use-after-free
Source: CVE Program / CVE List V5
Vulnerability Description
Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
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 DCCP CCID 中存在资源管理错误漏洞，该漏洞允许攻击者触发拒绝服务并可能运行代码。
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

Vendor Product Affected Versions CPE Subscribe
Canonical Linux kernel 5.4 kernel ~ 5.4.0-51.56 -

II. Public POCs for CVE-2020-16119

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III. Intelligence Information for CVE-2020-16119

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Vendor Advisories for CVE-2020-16119 (7)

Mailing List Discussions for CVE-2020-16119 (2)

Other References for CVE-2020-16119 (3)

IV. Related Vulnerabilities

Same product: Linux kernel
Same vendor: Canonical
Same weakness: CWE-416

V. Comments for CVE-2020-16119

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