| 标题 | Memcached 1.6.41 > 1.6.43 Out-of-Bounds Read |
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| 描述 | A pre-authentication remote denial-of-service vulnerability affects memcached 1.6.41 through 1.6.43 when started with ASCII authentication (-Y <authfile>). An unauthenticated client can trigger a crash by sending three newline bytes (\n\n\n) immediately after connecting. The authentication path forwards an empty line to the vendored mcmc tokenizer without validating that the token length is non-zero. Because _mcmc_tokenize_meta() assumes an input length of at least two bytes, it performs out-of-bounds pointer arithmetic and enters an unbounded scan that ultimately dereferences unmapped memory, causing the memcached process to terminate with SIGSEGV. |
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| 来源 | ⚠️ https://protectiv.ph/research/memcached-asciiauth-empty-line-dos |
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| 用户 | Ebfe7001d27b27064356271ddfb15d59 (UID 100393) |
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| 提交 | 2026-08-05 16時06分 (2 月前) |
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| 管理 | 2026-09-13 07時24分 (1 month later) |
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| 状态 | 重复 |
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| VulDB条目 | 403231 [memcached 1.6.41/1.6.42/1.6.43 mcmc Tokenizer proto_text.c try_read_command_asciiauth 信息公开] |
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| 积分 | 0 |
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