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libressl
des-fcrypt.diff
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File des-fcrypt.diff of Package libressl
From: Jan Engelhardt <jengelh@inai.de> References: https://marc.info/?l=openbsd-tech&m=150906184009035&w=2 Do what openssl-1.1 is doing to guard against an otherwise out-of-bounds access. --- crypto/des/fcrypt.c | 2 ++ 1 file changed, 2 insertions(+) Index: libressl-3.8.2/crypto/des/fcrypt.c =================================================================== --- libressl-3.8.2.orig/crypto/des/fcrypt.c +++ libressl-3.8.2/crypto/des/fcrypt.c @@ -79,6 +79,8 @@ DES_fcrypt(const char *buf, const char * * crypt to "*". This was found when replacing the crypt in * our shared libraries. People found that the disabled * accounts effectively had no passwd :-(. */ + if (salt[0] >= sizeof(con_salt) || salt[1] >= sizeof(con_salt)) + return NULL; x = ret[0] = ((salt[0] == '\0') ? 'A' : salt[0]); Eswap0 = con_salt[x] << 2; x = ret[1] = ((salt[1] == '\0') ? 'A' : salt[1]);
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