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File _service:tar_scm_kernel_repo:backport-0005-CVE-2022-3437.patch of Package samba
From 5f6dbf2ab29bcd30c701cab3daecf5a6a53a44cd Mon Sep 17 00:00:00 2001 From: Joseph Sutton <josephsutton@catalyst.net.nz> Date: Wed, 12 Oct 2022 13:57:55 +1300 Subject: [PATCH 09/15] CVE-2022-3437 source4/heimdal: Use constant-time memcmp() in unwrap_des3() The surrounding checks all use ct_memcmp(), so this one was presumably meant to as well. BUG: https://bugzilla.samba.org/show_bug.cgi?id=15134 Signed-off-by: Joseph Sutton <josephsutton@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org> Conflict: NA Reference: https://download.samba.org/pub/samba/patches/security/samba-4.15.11-security-2022-10-25.patch --- source4/heimdal/lib/gssapi/krb5/unwrap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/source4/heimdal/lib/gssapi/krb5/unwrap.c b/source4/heimdal/lib/gssapi/krb5/unwrap.c index b3da35ee9e2..7111a7944fe 100644 --- a/source4/heimdal/lib/gssapi/krb5/unwrap.c +++ b/source4/heimdal/lib/gssapi/krb5/unwrap.c @@ -227,7 +227,7 @@ unwrap_des3 if (ret) return ret; - if (memcmp (p, "\x04\x00", 2) != 0) /* HMAC SHA1 DES3_KD */ + if (ct_memcmp (p, "\x04\x00", 2) != 0) /* HMAC SHA1 DES3_KD */ return GSS_S_BAD_SIG; p += 2; if (ct_memcmp (p, "\x02\x00", 2) == 0) { -- 2.25.1
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