Fedora 27 update for mupdf



| Updated: 2025-04-24
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2018-6192
CVE-2018-6544
CVE-2018-1000051
CVE-2018-6187
CWE-ID CWE-119
CWE-20
CWE-416
CWE-122
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Fedora
Operating systems & Components / Operating system

mupdf
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Memory corruption

EUVDB-ID: #VU12560

Risk: Low

CVSSv4.0: 1 [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]

CVE-ID: CVE-2018-6192

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

mupdf: before 1.12.0-5.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-da6f76b446


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper input validation

EUVDB-ID: #VU11489

Risk: Low

CVSSv4.0: 2.7 [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]

CVE-ID: CVE-2018-6544

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists in th pdf_load_obj_stm in pdf/pdf-xref.c due to it can reference the object stream recursively and therefore run out of error stack. A remote attacker can submit a specially crafted PDF document cause the service to crash.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

mupdf: before 1.12.0-5.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-da6f76b446


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Use-after-free error

EUVDB-ID: #VU11490

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-1000051

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists in the fz_keep_key_storable due to use-after-free error. A remote attacker can submit a specially crafted PDF file, trigger memory corruption and cause the service to crash or execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

mupdf: before 1.12.0-5.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-da6f76b446


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Heap-based buffer overflow

EUVDB-ID: #VU12558

Risk: Low

CVSSv4.0: 1 [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]

CVE-ID: CVE-2018-6187

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 27

mupdf: before 1.12.0-5.fc27

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-da6f76b446


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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