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| author | Tom Yu <tlyu@mit.edu> | 2007-09-04 18:52:56 +0000 |
|---|---|---|
| committer | Tom Yu <tlyu@mit.edu> | 2007-09-04 18:52:56 +0000 |
| commit | d9d289e5519303478acf1853a89a3e0fbf170463 (patch) | |
| tree | 4b8c30b10607039a7282576e83e79efeb7000fc3 /src/lib/rpc | |
| parent | 8f547d08883c960887cf0bd136c5425a9aadccb0 (diff) | |
| download | krb5-d9d289e5519303478acf1853a89a3e0fbf170463.zip krb5-d9d289e5519303478acf1853a89a3e0fbf170463.tar.gz krb5-d9d289e5519303478acf1853a89a3e0fbf170463.tar.bz2 | |
fix CVE-2007-3999 svc_auth_gss.c buffer overflow
Make sure svcauth_gss_validate adequately checks oa->oa_length prior
to copying into rpcbuf.
ticket: new
target_version: 1.6.3
tags: pullup
component: krb5-libs
git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@19913 dc483132-0cff-0310-8789-dd5450dbe970
Diffstat (limited to 'src/lib/rpc')
| -rw-r--r-- | src/lib/rpc/svc_auth_gss.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/rpc/svc_auth_gss.c b/src/lib/rpc/svc_auth_gss.c index e2c0777..bac560d 100644 --- a/src/lib/rpc/svc_auth_gss.c +++ b/src/lib/rpc/svc_auth_gss.c @@ -339,7 +339,7 @@ svcauth_gss_validate(struct svc_req *rqst, struct svc_rpc_gss_data *gd, struct r oa = &msg->rm_call.cb_cred; IXDR_PUT_ENUM(buf, oa->oa_flavor); IXDR_PUT_LONG(buf, oa->oa_length); - if (oa->oa_length) { + if (oa->oa_length && oa->oa_length <= sizeof(rpchdr)) { memcpy((caddr_t)buf, oa->oa_base, oa->oa_length); buf += RNDUP(oa->oa_length) / sizeof(int32_t); } |