SB2019021916 - OpenSUSE Linux update for php7

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2018-19935)

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to NULL pointer dereference in _php_imap_mail when improper check of wheater message. A remote attacker can supply specially crafted message, trigger NULL pointer dereference and cause the service to crash.

2) Out-of-bounds write (CVE-ID: CVE-2019-6977)

The vulnerability allows a remote attacker to execute arbitrary on the target system.

The weakness exists due to out-of-bounds write in imagecolormatch. A remote attacker can write up to 1200 bytes over the boundaries of a buffer allocated in the imagecolormatch function, which then calls gdImageColorMatch() and execute arbitrary code with elevated privileges.

3) Double Free (CVE-ID: CVE-2019-6978)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to double free in the gdImage*Ptr() functions in gd_gif_out.c, gd_jpeg.c, and gd_wbmp.c. A remote attacker can trick the victim into opening a specially crafted input, trigger double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://lists.opensuse.org/opensuse-security-announce/2019-02/msg00046.html