CVE-2021-32055 : What You Need to Know
Discover the impact of CVE-2021-32055 affecting Mutt 1.11.0 to 2.0.6 and NeoMutt versions 2019-10-25 to 2021-05-04 with an out-of-bounds read in IMAP, its technical details, and mitigation steps.
A security vulnerability labeled as CVE-2021-32055 has been discovered in Mutt versions 1.11.0 through 2.0.6 and NeoMutt versions from 2019-10-25 to 2021-05-04. The vulnerability involves an issue related to $imap_qresync leading to an out-of-bounds read in imap/util.c when an IMAP sequence set ends with a comma. Here's a detailed breakdown of the CVE.
Understanding CVE-2021-32055
This section dives into the specifics of the CVE, including its impact and technical details.
What is CVE-2021-32055?
The CVE-2021-32055 vulnerability affects Mutt and NeoMutt email clients, exposing them to a security flaw that enables an out-of-bounds read due to a specific condition with the IMAP sequence set.
The Impact of CVE-2021-32055
The vulnerability allows attackers to trigger an out-of-bounds read, potentially leading to information exposure, denial of service, or other malicious activities exploiting the flaw in affected versions.
Technical Details of CVE-2021-32055
Explore the technical aspects of the CVE to understand its implications better.
Vulnerability Description
The issue arises from a mishandling of IMAP sequence sets ending with a comma, triggering an out-of-bounds read in the imap/util.c code.
Affected Systems and Versions
Mutt versions 1.11.0 through 2.0.6 and NeoMutt versions from 2019-10-25 to 2021-05-04 are vulnerable to this security flaw.
Exploitation Mechanism
Exploiting this vulnerability involves crafting a specific IMAP sequence set ending with a comma to trigger the out-of-bounds read in the affected email clients.
Mitigation and Prevention
Discover the steps to mitigate the risks posed by CVE-2021-32055 and prevent potential exploitation.
Immediate Steps to Take
Users are advised to update their Mutt or NeoMutt clients to versions 2.0.7 or newer to patch the vulnerability and protect their systems from exploitation.
Long-Term Security Practices
Implement security best practices such as regularly updating software, staying informed about security advisories, and employing email security measures to prevent future vulnerabilities.
Patching and Updates
Stay vigilant for security updates from the official Mutt and NeoMutt sources to address known security issues and keep your systems secure.