SB2019112203 - Multiple vulnerabilities in Xcftools

Description

This security bulletin contains information about 2 vulnerabilities.

1) Integer overflow (CVE-ID: CVE-2019-5086)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to integer overflow in the "flattenIncrementally" function in the "xcf2png" and "xcf2pnm" binaries. A remote attacker can trick a victim to open a specially crafted XCF file, trigger integer overflow and execute arbitrary code on the target system.

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

Note: An integer overflow can occur while walking through tiles.

2) Integer overflow (CVE-ID: CVE-2019-5087)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to integer overflow in the "flattenIncrementally" function in the "xcf2png" and "xcf2pnm" binaries. A remote attacker can trick a victim to open a specially crafted XCF file, trigger integer overflow and execute arbitrary code on the target system.

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

Note: An integer overflow can occur while calculating the row's allocation size.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0878
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0879