PT-2023-2768 · Ntp+5 · Ntp+5
Published
2023-04-11
·
Updated
2024-11-28
·
CVE-2023-26553
CVSS v3.1
5.6
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
Name of the Vulnerable Software and Affected Versions
NTP version 4.2.8p15
Description
The issue is related to an out-of-bounds write when copying the trailing number in the
mstolfp() function in libntp/mstolfp.c. This can be exploited by sending a specially crafted request, potentially allowing a remote attacker to execute arbitrary code or cause a denial of service. The vulnerability specifically affects the ntpq process, a client program for monitoring NTP operations, but does not affect the ntpd process.Recommendations
For NTP version 4.2.8p15, consider disabling the
mstolfp() function as a temporary workaround until a patch is available. Restrict access to the libntp/mstolfp.c module to minimize the risk of exploitation. Avoid using the mstolfp() function in the affected ntpq process until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
DoS
Memory Corruption
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Ibm Aix
Ntp
Suse