CVE-2026-45104
HighCVSS 7.5Summary
MapServer, system do tworzenia aplikacji GIS w sieci, ma podatność, która występuje w wersjach od 6.4.0 do przed 8.6.3. Problem polega na tym, że msSLDParseUserStyle zawsze wywołuje _SLDApplyRuleValues, co prowadzi do dereferencji wskaźnika NULL w przypadku reguły bez symbolizera.
Risk Assessment
Wykorzystanie tej podatności może prowadzić do awarii aplikacji GIS, co może wpłynąć na dostępność usług w organizacji. Atakujący może wywołać ten błąd bez potrzeby uwierzytelnienia.
Recommendation
Zaleca się aktualizację MapServer do wersji 8.6.3 lub nowszej, aby usunąć tę podatność i zabezpieczyć system przed potencjalnymi atakami.
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Original NVD description (English source)
MapServer is a system for developing web-based GIS applications. From 6.4.0 to before 8.6.3, msSLDParseUserStyle always calls _SLDApplyRuleValues(psRule, psLayer, 1); for any <Rule> carrying <ElseFilter/> — it assumes msSLDParseRule added one class. When the rule has no symbolizer (a structurally valid SLD), msSLDParseRule adds zero, and _SLDApplyRuleValues ends up indexing _class[-1], resulting in a NULL pointer dereference. A 200-byte well-formed SLD via the WMS SLD_BODY= parameter is enough to trigger this, no auth required. This vulnerability is fixed in 8.6.3.