SB2018101117 - Fedora 29 update for libtiff

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Integer overflow (CVE-ID: CVE-2018-17100)

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

The vulnerability exists due to int32 overflow when insufficient validation of user-supplied input processed by the multiply_ms() function, as defined in the tools/ppm2tiff.c source code file. A remote unauthenticated attacker can trick the victim into opening or executing an image file that submits malicious input to the targeted system. A successful exploit could trigger memory corruption and cause the affected software to crash, resulting in a DoS condition.

2) Out-of-bounds read (CVE-ID: CVE-2018-17101)

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

The vulnerability exists due to out-of-bounds read during insufficient validation of user-supplied input processed by the cpTags function, as defined in the tools/tiff2bw.c and tools/pal2rgb.c source code files. A remote unauthenticated attacker can trick the victim into opening or executing an image file that submits malicious input to the targeted system. A successful exploit could trigger memory corruption and cause the affected software to crash, resulting in a DoS condition.

3) Heap-based buffer over-read (CVE-ID: CVE-2018-10779)

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

The weakness exists in the TIFFWriteScanline function in the tif_write.csource code file due to insufficient validation of user-supplied input. A local attacker can use the .bmp2tiff command to execute a specially crafted file, trigger heap-based buffer over-read and cause the service to crash.

4) Resource exhaustion (CVE-ID: CVE-2018-10801)

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

The vulnerability exists due to insufficient validation of user-supplied input processed by the TIFFClientOpen function, as defined in the tif_unix.c source code file. A remote attacker can use the .bmp2tiff command to execute a file that submits malicious input to the system, trigger memory leaks and cause the affected software to crash, resulting in a DoS condition.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-2018-6c9873a3df