CVE-2018-1000858 : Security Advisory and Response
Learn about CVE-2018-1000858, a CSRF vulnerability in GnuPG versions 2.1.12 - 2.2.11, allowing for Attacker controlled CSRF, Information Disclosure, and DoS attacks. Find mitigation steps and prevention measures.
A vulnerability related to Cross-Site Request Forgery (CSRF) has been discovered in the versions 2.1.12 - 2.2.11 of GnuPG, specifically in the component called dirmngr. This vulnerability could potentially lead to Attacker controlled CSRF, Information Disclosure, and Denial of Service (DoS) attacks. The exploit requires the victim to perform a WKD request, such as entering an email address in the composer window of Thunderbird/Enigmail. The issue has been resolved in the latest commit.
Understanding CVE-2018-1000858
This CVE entry pertains to a CSRF vulnerability in GnuPG versions 2.1.12 - 2.2.11.
What is CVE-2018-1000858?
The vulnerability in GnuPG's dirmngr component could allow attackers to execute CSRF, Information Disclosure, and DoS attacks by manipulating victim-initiated WKD requests.
The Impact of CVE-2018-1000858
The vulnerability could result in Attacker controlled CSRF, Information Disclosure, and Denial of Service (DoS) attacks.
Technical Details of CVE-2018-1000858
GnuPG version 2.1.12 - 2.2.11 contains a Cross-Site Request Forgery (CSRF) vulnerability in the dirmngr component.
Vulnerability Description
The vulnerability allows for Attacker controlled CSRF, Information Disclosure, and Denial of Service (DoS) attacks.
Affected Systems and Versions
- Product: n/a
- Vendor: n/a
- Versions: 2.1.12 - 2.2.11
Exploitation Mechanism
To exploit this vulnerability, the victim must perform a WKD request, like entering an email address in the composer window of Thunderbird/Enigmail.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent potential exploits.
Immediate Steps to Take
- Update GnuPG to the latest version that includes the fix.
- Avoid performing WKD requests from untrusted sources.
Long-Term Security Practices
- Regularly update software to patch known vulnerabilities.
- Educate users on safe browsing practices and email security.
Patching and Updates
Ensure that GnuPG is regularly updated to the latest version containing the fix for CVE-2018-1000858.