CVE-2023-35169 — PHP-IMAP is a wrapper for common IMAP communication without the need to have the

PHP-IMAP is a wrapper for common IMAP communication without the need to have the php-imap module installed / enabled. Prior to version 5.3.0, an unsanitized attachment filename allows any unauthenticated user to leverage a directory traversal vulnerability, which results in a rem

01What is this vulnerability?

PHP-IMAP is a wrapper for common IMAP communication without the need to have the php-imap module installed / enabled. Prior to version 5.3.0, an unsanitized attachment filename allows any unauthenticated user to leverage a directory traversal vulnerability, which results in a remote code execution vulnerability. Every application that stores attachments with `Attachment::save()` without providing…

02Affected products

Vendor	Product	Versions
Webklex	php	imap — < 5.3.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-06-23T20:37:28.324Z
• Last modified: 2024-11-27T20:22:12.801Z

09References

• github.com — https://github.com/Webklex/php-imap/security/advisories/GHSA-47p7-xfcc-4pv9
• github.com — https://github.com/Webklex/php-imap/pull/414
• github.com — https://github.com/Webklex/php-imap/blob/5.2.0/src/Attachment.php#L251-L255
• github.com — https://github.com/Webklex/php-imap/blob/5.2.0/src/Attachment.php#L252
• github.com — https://github.com/Webklex/php-imap/releases/tag/5.3.0