Multiple vulnerabilities in PCRE



| Updated: 2022-10-11
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2017-6004
CVE-2017-7186
CWE-ID CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
 PCRE
Universal components / Libraries / Libraries used by multiple products

Vendor PCRE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU68111

Risk: Medium

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:Green]

CVE-ID: CVE-2017-6004

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the compile_bracket_matchingpath() function in pcre_jit_compile.c. A remote attacker can pass a specially crafted regular expression to the application, trigger an out-of-bounds read and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PCRE: 8.00 - 8.40

CPE2.3 External links

https://bugzilla.redhat.com/show_bug.cgi?id=1425365


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) Out-of-bounds read

EUVDB-ID: #VU7564

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7186

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The weakness exists due to a segmentation violation issue by the libpcre1 and libpcre2. A remote attacker can send specially crafted packets and cause the application to crash.

Successful exploitation of the vulnerability results in denial of service.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PCRE: 8.00 - 8.40

CPE2.3 External links

https://blogs.gentoo.org/ago/2017/03/20/libpcre-invalid-memory-read-in-_pcre32_xclass-pcre_xclass-c/


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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