תיאור (מקור, אנגלית)
iskorotkov/avro is a fast Go Avro codec. Prior to 2.33.0, the Avro array and map decoders looped over an attacker-controlled block-count value without checking the underlying reader's error state inside the loop body. Reader.ReadBlockHeader returns the count as a Go int, which is 64-bit on amd64 / arm64 targets — so a producer can declare a block of up to math.MaxInt64 (~9.2 × 10¹⁸) elements followed by EOF (or any truncated payload), and the decoder will attempt that many no-op iterations before propagating the error. The realistic ceiling is "indefinite until the worker is killed externally" — a single hostile payload pins a CPU core until the process is OOM-killed, deadline-cancelled, or terminated. Remote, unauthenticated denial-of-service. This vulnerability is fixed in 2.33.0.
קישורים10
- github.com/iskorotkov/avro/security/advisories/GHSA-w8j3-pq8g-…
- access.redhat.com/errata/RHSA-2026:30651
- access.redhat.com/errata/RHSA-2026:41030
- access.redhat.com/errata/RHSA-2026:41064
- access.redhat.com/errata/RHSA-2026:42852
- access.redhat.com/errata/RHSA-2026:44622
- access.redhat.com/errata/RHSA-2026:47149
- access.redhat.com/errata/RHSA-2026:48151
- access.redhat.com/errata/RHSA-2026:53530
- access.redhat.com/errata/RHSA-2026:57191
מדדים
- CVSS 3.1
-
7.5
HIGH
מקור הציון: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
8.7
HIGH
מקור הציון: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — סבירות ניצול
- 1% אחוזון 50 · נכון ל-15 בנובמבר 2026
- CWE
- CWE-400CWE-835
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