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27 lines
1.3 KiB
27 lines
1.3 KiB
diff -up pam_ssh_agent_auth-0.9.2/iterate_ssh_agent_keys.c.seteuid pam_ssh_agent_auth-0.9.2/iterate_ssh_agent_keys.c |
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--- pam_ssh_agent_auth-0.9.2/iterate_ssh_agent_keys.c.seteuid 2010-09-08 08:54:29.000000000 +0200 |
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+++ pam_ssh_agent_auth-0.9.2/iterate_ssh_agent_keys.c 2010-11-22 08:38:05.000000000 +0100 |
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@@ -131,13 +131,18 @@ ssh_get_authentication_socket_for_uid(ui |
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} |
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errno = 0; |
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- seteuid(uid); /* To ensure a race condition is not used to circumvent the stat |
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- above, we will temporarily drop UID to the caller */ |
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+ /* To ensure a race condition is not used to circumvent the stat |
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+ above, we will temporarily drop UID to the caller */ |
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+ if (seteuid(uid) == -1) { |
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+ close(sock); |
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+ error("seteuid(%lu) failed", (unsigned long) uid); |
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+ return -1; |
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+ } |
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if (connect(sock, (struct sockaddr *)&sunaddr, sizeof sunaddr) < 0) { |
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close(sock); |
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- if(errno == EACCES) |
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- fatal("MAJOR SECURITY WARNING: uid %lu made a deliberate and malicious attempt to open an agent socket owned by another user", (unsigned long) uid); |
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- return -1; |
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+ sock = -1; |
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+ if(errno == EACCES) |
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+ fatal("MAJOR SECURITY WARNING: uid %lu made a deliberate and malicious attempt to open an agent socket owned by another user", (unsigned long) uid); |
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} |
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seteuid(0); /* we now continue the regularly scheduled programming */
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