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CVE-2019-18903— wicked: Use-after-free when receiving invalid DHCP6 IA_PD option

Quick assessment

Affected
SUSE SUSE Linux Enterprise Server 12
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.

openSUSE和SUSE Linux Enterprise Server都是德国SUSE公司的产品。openSUSE是一套基于Linux的自由操作系统与开源社区项目。SUSE Linux Enterprise Server是一套企业服务器版Linux操作系统。 SUSE Linux Enterprise Server、openSUSE Leap和openSUSE Factory中的wicked存在资源管理错误漏洞。远程攻击者可利用该漏洞导致拒绝服务或执行代码。以下产品及版本受到影响：SUSE Linux

CVSS 7.5 · High EPSS 2.42% · P84

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2019-18903

Vulnerability Information
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Vulnerability Title
wicked: Use-after-free when receiving invalid DHCP6 IA_PD option
Source: CVE Program / CVE List V5
Vulnerability Description
A Use After Free vulnerability in wicked of SUSE Linux Enterprise Server 12, SUSE Linux Enterprise Server 15; openSUSE Leap 15.1, Factory allows remote attackers to cause DoS or potentially code execution. This issue affects: SUSE Linux Enterprise Server 12 wicked versions prior to 0.6.60-2.18.1. SUSE Linux Enterprise Server 15 wicked versions prior to 0.6.60-28.26.1. openSUSE Leap 15.1 wicked versions prior to 0.6.60-lp151.2.9.1. openSUSE Factory wicked versions prior to 0.6.62.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/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
SUSE Linux Enterprise Server、openSUSE Leap和openSUSE Factory wicked 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openSUSE和SUSE Linux Enterprise Server都是德国SUSE公司的产品。openSUSE是一套基于Linux的自由操作系统与开源社区项目。SUSE Linux Enterprise Server是一套企业服务器版Linux操作系统。 SUSE Linux Enterprise Server、openSUSE Leap和openSUSE Factory中的wicked存在资源管理错误漏洞。远程攻击者可利用该漏洞导致拒绝服务或执行代码。以下产品及版本受到影响：SUSE Linux
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
SUSE SUSE Linux Enterprise Server 12 wicked ~ 0.6.60-2.18.1 -
SUSE SUSE Linux Enterprise Server 15 wicked ~ 0.6.60-28.26.1 -
openSUSE Leap 15.1 wicked ~ 0.6.60-lp151.2.9.1 -
openSUSE Factory wicked ~ 0.6.62 -

II. Public POCs for CVE-2019-18903

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III. Intelligence Information for CVE-2019-18903

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Vendor Advisories for CVE-2019-18903 (1)

Same Patch Batch · SUSE · 2020-03-02 · 5 CVEs total

CVE-2019-18897 8.4 HIGH Local privilege escalation from user salt to root
CVE-2019-18902 7.5 HIGH wicked: Use-after-free when receiving invalid DHCP6 client options
CVE-2019-18901 5.1 MEDIUM mysql-systemd-helper allows setting 640 permissions of arbitrary files
CVE-2020-8013 2.2 LOW permissions: chkstat sets unintended setuid/capabilities for mrsh and wodim

IV. Related Vulnerabilities

Same product: SUSE Linux Enterprise Server 12
Same vendor: SUSE
Same weakness: CWE-416

V. Comments for CVE-2019-18903

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