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Red Hat Bugzilla – Attachment 152467 Details for
Bug 236121
LSPP: racoon has a buffer overflow when receiving large security context from kernel
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[patch]
Check that security context string doesn't overflow the buffer.
patch.0412.1 (text/plain), 699 bytes, created by
Joy Latten
on 2007-04-12 15:37:10 UTC
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Description:
Check that security context string doesn't overflow the buffer.
Filename:
MIME Type:
Creator:
Joy Latten
Created:
2007-04-12 15:37:10 UTC
Size:
699 bytes
patch
obsolete
>diff -urpN ipsec-tools-0.6.5/src/racoon/pfkey.c ipsec-tools-0.6.5.patch/src/racoon/pfkey.c >--- ipsec-tools-0.6.5/src/racoon/pfkey.c 2007-04-12 09:21:35.000000000 -0500 >+++ ipsec-tools-0.6.5.patch/src/racoon/pfkey.c 2007-04-12 09:23:10.000000000 -0500 >@@ -1735,6 +1735,12 @@ pk_recvacquire(mhp) > m_sec_ctx = (struct sadb_x_sec_ctx *)mhp[SADB_X_EXT_SEC_CTX]; > > if (m_sec_ctx != NULL) { >+ if (m_sec_ctx->sadb_x_ctx_len > MAX_CTXSTR_SIZE) { >+ plog(LLV_ERROR, LOCATION, NULL, >+ "ignoring ACQUIRE: security context is greater than MAX, %d.\n", >+ MAX_CTXSTR_SIZE); >+ return -1; >+ } > plog(LLV_INFO, LOCATION, NULL, > "security context doi: %u\n", > m_sec_ctx->sadb_x_ctx_doi);
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