SB2019040509 - OpenSUSE Linux update for tiff

Description

This security bulletin contains information about 4 vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2018-19210)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to insufficient validation of user-supplied input processed by the TIFFWriteDirectorySec function, as defined in the tif_dirwrite.c source code file. A remote attacker can trick the victim into opening or executing a file that submits malicious input, trigger a NULL pointer dereference and cause the service to crash.

2) Memory leak (CVE-ID: CVE-2019-6128)

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in TIFFFdOpen function in tif_unix.c. A remote attacker can trigger memory leak and perform denial of service attack.

3) NULL pointer dereference (CVE-ID: CVE-2019-7663)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an invalid address dereference condition that exists in the TIFFWriteDirectoryTagTransferfunction, as defined in the libtiff/tif_dirwrite.c source code file. A remote attacker can trick the victim into accessing a Tagged Image File Format (TIFF) file that submits malicious input and trigger a segmentation fault in the cpSeparateBufToContigBuf function in the tiffcp.c file, resulting in a DoS condition.

4) NULL pointer dereference (CVE-ID: CVE-2018-17000)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error in the function _TIFFmemcmp at tif_unix.c (called from TIFFWriteDirectoryTagTransferfunction). A remote attacker can create a specially crafted tiff file and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://lists.opensuse.org/opensuse-security-announce/2019-04/msg00041.html