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CVE-2018-15688— Out-of-Bounds write in systemd-networkd dhcpv6 option handling

Quick assessment

Affected
systemd systemd
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.

systemd是德国Lennart Poettering软件开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 239及之前版本中的dhcp6客户端存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。

AI Predicted 9.8 Difficulty: Easy EPSS 1.67% · P76

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2018-15688

Vulnerability Information
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Vulnerability Title
Out-of-Bounds write in systemd-networkd dhcpv6 option handling
Source: CVE Program / CVE List V5
Vulnerability Description
A buffer overflow vulnerability in the dhcp6 client of systemd allows a malicious dhcp6 server to overwrite heap memory in systemd-networkd. Affected releases are systemd: versions up to and including 239.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
systemd dhcp6客户端缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
systemd是德国Lennart Poettering软件开发者的一款基于Linux的系统和服务管理器。该产品兼容了SysV和LSB的启动脚本，且提供了一个用来表示系统服务间依赖关系的框架。 systemd 239及之前版本中的dhcp6客户端存在缓冲区错误漏洞。该漏洞源于网络系统或产品在内存上执行操作时，未正确验证数据边界，导致向关联的其他内存位置上执行了错误的读写操作。攻击者可利用该漏洞导致缓冲区溢出或堆溢出等。
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
systemd systemd unspecified ~ 239 -

II. Public POCs for CVE-2018-15688

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III. Intelligence Information for CVE-2018-15688

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Patches & Fixes for CVE-2018-15688 (1)

Vendor Advisories for CVE-2018-15688 (7)

Mailing List Discussions for CVE-2018-15688 (1)

Same Patch Batch · systemd · 2018-10-26 · 3 CVEs total

CVE-2018-15686 systemd: reexec state injection: fgets() on overlong lines leads to line splitting
CVE-2018-15687 systemd: chown_one() can dereference symlinks

IV. Related Vulnerabilities

Same product: systemd
Same vendor: systemd

V. Comments for CVE-2018-15688

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