SB2021051949 - Red Hat Enterprise Linux 8 update for glibc
Published: May 19, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2016-10228)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. The iconv program in the GNU C Library (aka glibc or libc6) 2.31 and earlier, when invoked with multiple suffixes in the destination encoding (TRANSLATE or IGNORE) along with the -c option, enters an infinite loop when processing invalid multi-byte input sequences, leading to a denial of service.
2) Out-of-bounds read (CVE-ID: CVE-2019-25013)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in GNU C Library within the iconv feature when processing multi-byte input sequences in the EUC-KR encoding. A remote attacker can pass specially crafted input to the application, trigger out-of-bounds read error and perform a denial of service (DoS) attack.
3) Out-of-bounds read (CVE-ID: CVE-2019-9169)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack or gain access to sensitive information.
The vulnerability exists due to heap-based buffer over-read via an attempted case-insensitive regular-expression match. A remote attacker can perform a denial of service attack or gain access to sensitive information.
4) Infinite loop (CVE-ID: CVE-2020-27618)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within iconv implementation when processing multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, IBM1399 encodings. A remote attacker can pass specially crafted data to the application, consume all available system resources and cause denial of service conditions.
5) Reachable Assertion (CVE-ID: CVE-2021-3326)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion within the iconv function in the GNU C Library (aka glibc or libc6) when processing invalid input sequences in the ISO-2022-JP-3 encoding. A remote attacker can pass specially crafted data to the application, trigger an assertion failure and crash the affected application.
Remediation
Install update from vendor's website.