SB2024022153 - Red Hat Enterprise Linux 8 update for oniguruma
Published: February 21, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2019-13224)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the onig_new_deluxe() function in regext.c in Oniguruma library when processing regular expressions. A remote attacker can pass specially crafted input to the application using the vulnerable library version, trigger use-after-free error and perform denial of service attack or execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
2) Resource exhaustion (CVE-ID: CVE-2019-16163)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Oniguruma before 6.9.3 allows Stack Exhaustion in regcomp.c because of recursion in regparse.c.
3) Integer overflow (CVE-ID: CVE-2019-19012)
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to integer overflow in the "search_in_range" function in "regexec.c". A remote attacker can use a specially crafted regular expression, trigger out-of-bounds read and cause a denial-of-service or information disclosure on the target system.
4) Buffer Over-read (CVE-ID: CVE-2019-19203)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the "gb18030_mbc_enc_len" function in "gb18030.c" file due to the UChar pointer is dereferenced without checking if it passed the end of the matched string. A remote attacker can cause a denial of service condition on the target system.
5) Buffer Over-read (CVE-ID: CVE-2019-19204)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists in the "fetch_interval_quantifier" function (formerly known as fetch_range_quantifier) in "regparse.c" file due to the PFETCH is called without checking PEND. A remote attacker can cause a denial of service condition on the target system.Remediation
Install update from vendor's website.