NTP 4.2.8p15 ntpd/refclock_palisade.c praecis_parse out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in NTP 4.2.8p15. The affected element is the function praecis_parse of the file ntpd/refclock_palisade.c. Executing a manipulation can lead to out-of-bounds write. This vulnerability is tracked as CVE-2023-26555. No exploit exists.

Detailsinfo

A vulnerability was found in NTP 4.2.8p15 (Network Management Software). It has been declared as critical. This vulnerability affects the function praecis_parse of the file ntpd/refclock_palisade.c. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds write.

The weakness was disclosed 04/12/2023. The advisory is available at github.com. This vulnerability was named CVE-2023-26555 since 02/25/2023. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 310772 (Juniper Junos OS Multiple Vulnerabilities (JSA73177)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (310772) and EUVD (EUVD-2023-30352). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Partially
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 310772
Nessus Name: Juniper Junos OS Multiple Vulnerabilities (JSA73177)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/25/2023 🔍
04/12/2023 +45 days 🔍
04/12/2023 +0 days 🔍
04/29/2026 +1113 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2023-26555 (🔍)
GCVE (CVE): GCVE-0-2023-26555
GCVE (VulDB): GCVE-100-225682
EUVD: 🔍

Entryinfo

Created: 04/12/2023 07:34
Updated: 04/29/2026 12:03
Changes: 04/12/2023 07:34 (39), 02/12/2025 02:05 (26), 11/10/2025 01:05 (1), 04/29/2026 12:03 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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