Description
A vulnerability was found in NagVis up to 1.9.33 and classified as problematic. This issue affects the function checkAuthCookie of the file share/server/core/classes/CoreLogonMultisite.php. The manipulation of the argument hash leads to incorrect type conversion. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 1.9.34 is able to address this issue. The identifier of the patch is 7574fd8a2903282c2e0d1feef5c4876763db21d5. It is recommended to upgrade the affected component. The identifier VDB-213557 was assigned to this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | NagVis | 1.9.0, 1.9.1, 1.9.2, 1.9.3, 1.9.4, 1.9.5, 1.9.6, 1.9.7, 1.9.8, 1.9.9, 1.9.10, 1.9.11, 1.9.12, 1.9.13, 1.9.14, 1.9.15, 1.9.16, 1.9.17, 1.9.18, 1.9.19, 1.9.20, 1.9.21, 1.9.22, 1.9.23, 1.9.24, 1.9.25, 1.9.26, 1.9.27, 1.9.28, 1.9.29, 1.9.30, 1.9.31, 1.9.32, 1.9.33 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nagvis | 1:1.9.34-1 | — |
| Debian 13 | nagvis | 1:1.9.34-1 | — |
| Debian 12 | nagvis | 1:1.9.34-1 | — |
| Debian 11 | nagvis | 1:1.9.25-2+deb11u1 | DLA-4149-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | nagvis | No fix yet | — |
| Ubuntu 18.04 LTS | nagvis | No fix yet | — |
| Ubuntu 16.04 LTS | nagvis | No fix yet | — |
Advisories 1
- DLA-4149-1 nagvis - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://vuldb.com/?id.213557 vdb-entry technical-description
- https://vuldb.com/?ctiid.213557 signature permissions-required
- https://github.com/NagVis/nagvis/commit/7574fd8a2903282c2e0d1feef5c4876763db21d5 patch
- https://github.com/NagVis/nagvis/releases/tag/nagvis-1.9.34 patch
- https://www.sonarsource.com/blog/checkmk-rce-chain-2/ related