SB2019101515 - Multiple vulnerabilities in ncurses
Published: October 15, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Buffer Over-read (CVE-ID: CVE-2019-17595)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to heap-based buffer over-read issue in the "fmt_entry" function in "tinfo/comp_hash.c" in the terminfo library. A remote attacker can trigger a buffer over-read condition and cause a denial of service condition on the target system.2) Heap-based buffer overflow (CVE-ID: CVE-2019-17594)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the "_nc_find_entry" function in "tinfo/comp_hash.c" in the terminfo library. A remote attacker can trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00013.html
- https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00045.html
- https://github.com/zjuchenyuan/fuzzpoc/raw/master/infotocap_poc3
- https://lists.gnu.org/archive/html/bug-ncurses/2019-10/msg00017.html
- https://github.com/zjuchenyuan/fuzzpoc/raw/master/infotocap_poc6