The normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls tzset(). glibc treats a TZ value starting with / or : as a file path and opens it, so a value naming a FIFO or a blocking device stalls the process inside tzset().
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Solution
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Workaround
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Sat, 07 Nov 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
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| References |
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Sat, 07 Nov 2026 12:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting "tz" to tzset(), , so a FIFO or device path blocks the CGI process. The normalize_params method sends any query key matching /tz/i to tz(), which sets $ENV{TZ} to that value, with no validation. It then calls tzset(). glibc treats a TZ value starting with / or : as a file path and opens it, so a value naming a FIFO or a blocking device stalls the process inside tzset(). | |
| Title | RRD::CGI::Image versions through 0.01 for Perl pass CGI query parameters containting "tz" to tzset(), , so a FIFO or device path blocks the CGI process | |
| Weaknesses | CWE-1287 | |
| References |
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Projects
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MITRE
Status: PUBLISHED
Assigner: CPANSec
Published:
Updated: 2026-11-07T21:04:27.035Z
Reserved: 2026-11-06T14:15:29.328Z
Link: CVE-2026-123776
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-11-07T12:17:46.093
Modified: 2026-11-07T21:17:00.030
Link: CVE-2026-123776
Redhat
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OpenCVE Enrichment
Updated: 2026-11-07T14:00:25Z