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CVE-2023-41045— Insecure source port usage for DNS queries in Graylog

Quick assessment

Affected
Graylog2 graylog2-server
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.

Graylog是美国Graylog公司的一套集中式日志管理解决方案。该产品支持捕获、存储和实时分析日志等。 Graylog存在数据伪造问题漏洞，该漏洞源于容易受到DNS缓存中毒攻击。

CVSS 3.7 · Low EPSS 0.36% · P27

Possible ATT&CK Techniques 1 AI

T1498 · Network Denial of Service
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I. Basic Information for CVE-2023-41045

Vulnerability Information
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Vulnerability Title
Insecure source port usage for DNS queries in Graylog
Source: CVE Program / CVE List V5
Vulnerability Description
Graylog is a free and open log management platform. Graylog makes use of only one single source port for DNS queries. Graylog binds a single socket for outgoing DNS queries and while that socket is bound to a random port number it is never changed again. This goes against recommended practice since 2008, when Dan Kaminsky discovered how easy is to carry out DNS cache poisoning attacks. In order to prevent cache poisoning with spoofed DNS responses, it is necessary to maximise the uncertainty in the choice of a source port for a DNS query. Although unlikely in many setups, an external attacker could inject forged DNS responses into a Graylog's lookup table cache. In order to prevent this, it is at least recommendable to distribute the DNS queries through a pool of distinct sockets, each of them with a random source port and renew them periodically. This issue has been addressed in versions 5.0.9 and 5.1.3. Users are advised to upgrade. There are no known workarounds for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5
Vulnerability Title
Graylog 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Graylog是美国Graylog公司的一套集中式日志管理解决方案。该产品支持捕获、存储和实时分析日志等。 Graylog存在数据伪造问题漏洞，该漏洞源于容易受到DNS缓存中毒攻击。
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
Graylog2 graylog2-server < 5.0.9 -

II. Public POCs for CVE-2023-41045

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III. Intelligence Information for CVE-2023-41045

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Patches & Fixes for CVE-2023-41045 (2)

Vendor Advisories for CVE-2023-41045 (1)

IV. Related Vulnerabilities

Same product: graylog2-server
Same vendor: Graylog2
Same weakness: CWE-345

V. Comments for CVE-2023-41045

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