libIEC61850: Infinite loop and out-of-bounds read in ACSE parseUserInformation when parsing a malformed AARE PDU
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| mz-automation | libiec61850 | affected |
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| Mz-automation | Libiec61850 |
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No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.471% probability within 30 days)
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ssvc
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| First Time appeared |
Mz-automation
Mz-automation libiec61850 |
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| Vendors & Products |
Mz-automation
Mz-automation libiec61850 |
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| Description | libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, parseUserInformation in src/mms/iso_acse/acse.c checks len for zero before validating the negative bufPos returned by BerDecoder_decodeLength for a truncated long-form length. The continue path therefore swallows the error, reads buffer[-1], resets parsing to the beginning, and repeats the same malformed state. An unauthenticated remote peer can send a malformed AARE PDU during association to cause an infinite CPU loop under a normal allocator or a one-byte out-of-bounds read and process abort when the preceding byte is inaccessible. This issue is fixed in version 1.6.2. | |
| Title | libIEC61850: Infinite loop and out-of-bounds read in ACSE parseUserInformation when parsing a malformed AARE PDU | |
| Weaknesses | CWE-125 CWE-835 |
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| References |
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| Metrics |
cvssV4_0
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