| Name | CVE-2018-19935 | 
| Description | ext/imap/php_imap.c in PHP 5.x and 7.x before 7.3.0 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty string in the message argument to the imap_mail function. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
| References | DLA-1608-1, DSA-4353-1 | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| php5 | source | jessie | 5.6.39+dfsg-0+deb8u1 |  | DLA-1608-1 |  | 
| php5 | source | (unstable) | (unfixed) |  |  |  | 
| php7.0 | source | stretch | 7.0.33-0+deb9u1 |  | DSA-4353-1 |  | 
| php7.0 | source | (unstable) | (unfixed) |  |  |  | 
| php7.2 | source | (unstable) | (unfixed) |  |  |  | 
| php7.3 | source | (unstable) | 7.3.0-1 |  |  |  | 
Notes
Fixed in 5.6.39, 7.0.33, 7.1.26, 7.2.14, 7.3.0
PHP Bug: https://bugs.php.net/bug.php?id=77020
https://git.php.net/?p=php-src.git;a=commit;h=648fc1e369fc05fb9200a42c7938912236b2a318