SB2019090611 - Gentoo update for Perl
Published: September 6, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2018-18311)
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to integer overflow in Perl_my_setenv when processing malicious input. A remote unauthenticated attacker can supply specially crafted data, trigger heap-based buffer overflow and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Out-of-bounds write (CVE-ID: CVE-2018-18312)
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow write during compilation. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Heap-based buffer overflow (CVE-ID: CVE-2018-18313)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to heap-based buffer overflow read during compilation. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory leak and gain access to arbitrary data.
4) Heap-based buffer overflow (CVE-ID: CVE-2018-18314)
The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.
The vulnerability exists due to heap-based buffer overflow when processing malicious input. A remote unauthenticated attacker can supply specially crafted regular expression, trigger memory corruption and cause the service to crash or execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Heap-based buffer overflow (CVE-ID: CVE-2018-6797)
The vulnerability allows a local attacker to cause DoS condition or execute arbitrary code on the target system.The weakness exists in S_regatom() in 'regcomp.c' due to heap-based buffer overflow. A local attacker can exploit a specially crafted regular expression, trigger memory corruption and cause the service to crash or run Perl code.
Successful exploitation of the vulnerability may result in system compromise.
6) Heap-based buffer over-read (CVE-ID: CVE-2018-6798)
The vulnerability allows a local attacker to obtain potentially sensitive information or execute arbitrary code on the target system.The weakness exists due to heap-based buffer over-read. A local attacker can exploit a specially crafted locale dependent regular expression, trigger memory corruption and gain access to potentially sensitive information or run Perl code.
Successful exploitation of the vulnerability may result in system compromise.
7) Heap-based buffer overflow (CVE-ID: CVE-2018-6913)
The vulnerability allows a local attacker to cause DoS condition or execute arbitrary code on the target system.The weakness exists due to heap-based buffer overflow. A local attacker can exploit a specially crafted pack() function, trigger memory corruption and cause the service to crash or run Perl code.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Install update from vendor's website.