Netentsec NS-ASG Application Security Gateway naccheck.php xpath injection

published 2024-03-19 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-27597

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits: 0; none known

A vulnerability, which was classified as problematic, was found in Netentsec NS-ASG Application Security Gateway 6.3. Affected is an unknown function of the file /nac/naccheck.php. The manipulation of the argument username leads to improper neutralization of data within xpath expressions. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-257286 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 y ago (2024-07-09)

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/flyyue2001/cve/blob/main/NS-ASG-sql-naccheck.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CNA	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

Netentsec NS-ASG Application Security Gateway

Classification

Weakness

CWE-643 Improper Neutralization of Data within XPath Expressions
CWE-91 XML Injection

References

github.com /flyyue2001/cve/blob/main/NS-ASG-sql-naccheck.md
exploit
vuldb.com /?id.257286
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.257286
signature, permissions-required, vdb-entry

Sources

CVE List CVE-2024-2648
NVD CVE-2024-2648

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary