SB2018110604 - Debian update for mupdf
Published: November 6, 2018
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2017-17866)
CWE-ID: CWE-120 - Buffer overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to boundary error in pdf/pdf-write.c when a repair operation occurs during a clean operation. A remote attacker can trick the victim into opening a specially crafted PDF document, trigger memory corruption and cause the service to crash.
2) Infinite loop (CVE-ID: CVE-2018-5686)
CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the traget system.
The weakness exists in the pdf_parse_array function in pdf/pdf-parse.c due to infinite loop because EOF is not considered. A remote attacker can trick the victim into opening a specially crafted pdf file and cause the service to crash.
3) Heap-based buffer overflow (CVE-ID: CVE-2018-6187)
CWE-ID: CWE-122 - Heap-based Buffer Overflow
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the traget system.
The weakness exists in the do_pdf_save_document function in the pdf/pdf-write.c file due to heap-based buffer overflow. A remote attacker can trick the victim into opening a specially crafted pdf file, trigger memory corruption and cause the service to crash.
4) Memory corruption (CVE-ID: CVE-2018-6192)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the traget system.
The weakness exists the pdf_read_new_xref function in pdf/pdf-xref.c due to segmentation violation. A remote attacker can trick the victim into opening a specially crafted pdf file, trigger memory corruption and cause the service to crash.
5) Assertion failure (CVE-ID: CVE-2018-1000037)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to multiple reachable assertions in the PDF parser. A remote attacker can trick the victim into opening a specially crafted PDF document, trigger assertion failure and cause the service to crash.
6) Improper input validation (CVE-ID: CVE-2018-1000040)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to multiple use of uninitialized value bugs in the PDF parser when handling malicious input. A remote attacker can trick the victim into opening a specially crafted PDF document and cause the service to crash.
Remediation
Install update from vendor's website.