15 results · Feed
-
High 8.1
Orthanc DICOM Server Integer Overflow or Wraparound
An integer overflow in a specified pitch and buffer-size computation leads to a heap out-of-bounds write when Orthanc DICOM Server decodes an attacker-supplied PNG.
-
Low 3.3
Orthanc DICOM Server DCMTK FromDcmtkBridge.cpp read stack-based overflow
A security flaw has been discovered in Orthanc DICOM Server up to 1.12.11. This issue affects the function DcmItem::read of the file OrthancFramework/Sources/DicomParsing/FromDcmtkBridge.cpp of the component DCMTK Parser. Performing a manipulation results in …
-
High 7.5
Memory Exhaustion via Forged ZIP Metadata
A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP arch…
-
High 7.5
Out-of-Bounds Read in DicomStreamReader
An out-of-bounds read vulnerability exists in `DicomStreamReader` during DICOM meta-header parsing. When processing malformed metadata structures, the parser may read beyond the bounds of the allocated metadata buffer. Although this issue does not typically c…
-
High 7.5
Gzip Decompression Bomb via Content-Encoding Header
A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with `Content-Encoding: gzip`. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially craft…
-
High 7.5
Memory Exhaustion via Unbounded Content-Length
A memory exhaustion vulnerability exists in the HTTP server due to unbounded use of the `Content-Length` header. The server allocates memory directly based on the attacker supplied header value without enforcing an upper limit. A crafted HTTP request containi…
-
Critical 9.8
Heap Buffer Overflow in DICOM Image Decoder via VR UL Dimensions
A heap buffer overflow vulnerability exists in the DICOM image decoder. Dimension fields are encoded using Value Representation (VR) Unsigned Long (UL), instead of the expected VR Unsigned Short (US), which allows extremely large dimensions to be processed. T…
-
Critical 9.8
Heap Buffer Overflow in DICOM Image Decoder (Palette Color Decode)
A heap buffer overflow vulnerability exists during the decoding of `PALETTE COLOR` DICOM images. Pixel length validation uses 32-bit multiplication for width and height calculations. If these values overflow, the validation check incorrectly succeeds, allowin…
-
Critical 9.1
Out-of-Bounds Read in DicomImageDecoder (DecodeLookupTable)
An out-of-bounds read vulnerability exists in the `DecodeLookupTable` function within `DicomImageDecoder.cpp`. The lookup-table decoding logic used for `PALETTE COLOR` images does not validate pixel indices against the lookup table size. Crafted images contai…
-
High 7.1
Heap Buffer Overflow in PAM Image Buffer Allocation
A heap buffer overflow vulnerability exists in the PAM image parsing logic. When Orthanc processes a crafted PAM image embedded in a DICOM file, image dimensions are multiplied using 32-bit unsigned arithmetic. Specially chosen values can cause an integer ove…
-
High 7.1
Out-of-Bounds Read in DicomImageDecoder (PMSCT_RLE1 Decompression)
An out-of-bounds read vulnerability exists in the `DecodePsmctRle1` function of `DicomImageDecoder.cpp`. The `PMSCT_RLE1` decompression routine, which decodes the proprietary Philips Compression format, does not properly validate escape markers placed near th…
-
Medium 4.7
Orthanc versions before 1.12.10 are affected by an authorisation logic flaw in the application's HTTP Basic Authenticat…
-
Critical 9.8
Orthanc Server Missing Authentication for Critical Function
Orthanc server prior to version 1.5.8 does not enable basic authentication by default when remote access is enabled. This could result in unauthorized access by an attacker.
-
Medium 6.1
Orthanc versions before 1.12.2 are affected by a reflected cross-site scripting (XSS) vulnerability. The vulnerability …
-
Unscored —
Orthanc before 1.12.0 allows authenticated users with access to the Orthanc API to overwrite arbitrary files on the fil…