SB2019022229 - Fedora 29 update for xpdf

Description

This security bulletin contains information about 6 secuirty vulnerabilities.

1) NULL pointer dereference (CVE-ID: CVE-2018-7175)

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a JPX image with zero components.

2) Infinite loop (CVE-ID: CVE-2018-7173)

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

The weakness exists in the JBIG2Stream::readSymbolDictSeg function due to improper decoding operations. A remote attacker can send a specially crafted file, trick the victim into opening it, trigger infinite loop and cause the service to crash.

3) Infinite loop (CVE-ID: CVE-2018-7174)

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

An issue was discovered in xpdf 4.00. An infinite loop in XRef::Xref allows an attacker to cause denial of service because loop detection exists only for tables, not streams.

4) NULL pointer dereference (CVE-ID: CVE-2018-7454)

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a specific pdf file, as demonstrated by pdftohtml.

5) NULL pointer dereference (CVE-ID: CVE-2018-7452)

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

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a specific pdf file, as demonstrated by pdftohtml.

6) Out-of-bounds read (CVE-ID: CVE-2018-16368)

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

The vulnerability exists due to a boundary error in SplashXPath::strokeAdjust in splash/SplashXPath.cc in Xpdf 4.00. A remote attacker can perform a denial of service (heap-based buffer over-read) via a crafted pdf file, as demonstrated by pdftoppm.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-2019-b3aec99d2c