diff options
Diffstat (limited to 'meta-oe/recipes-connectivity/krb5/krb5/CVE-2023-36054.patch')
| -rw-r--r-- | meta-oe/recipes-connectivity/krb5/krb5/CVE-2023-36054.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta-oe/recipes-connectivity/krb5/krb5/CVE-2023-36054.patch b/meta-oe/recipes-connectivity/krb5/krb5/CVE-2023-36054.patch new file mode 100644 index 0000000000..160c090bce --- /dev/null +++ b/meta-oe/recipes-connectivity/krb5/krb5/CVE-2023-36054.patch @@ -0,0 +1,68 @@ +From ef08b09c9459551aabbe7924fb176f1583053cdd Mon Sep 17 00:00:00 2001 +From: Greg Hudson <ghudson@mit.edu> +Date: Mon, 21 Aug 2023 03:08:15 +0000 +Subject: [PATCH] Ensure array count consistency in kadm5 RPC + +In _xdr_kadm5_principal_ent_rec(), ensure that n_key_data matches the +key_data array count when decoding. Otherwise when the structure is +later freed, xdr_array() could iterate over the wrong number of +elements, either leaking some memory or freeing uninitialized +pointers. Reported by Robert Morris. + +CVE: CVE-2023-36054 + +An authenticated attacker can cause a kadmind process to crash by +freeing uninitialized pointers. Remote code execution is unlikely. +An attacker with control of a kadmin server can cause a kadmin client +to crash by freeing uninitialized pointers. + +ticket: 9099 (new) +tags: pullup +target_version: 1.21-next +target_version: 1.20-next + +Upstream-Status: Backport [https://github.com/krb5/krb5/commit/ef08b09c9459551aabbe7924fb176f1583053cdd] + +Signed-off-by: Soumya Sambu <soumya.sambu@windriver.com> +--- + src/lib/kadm5/kadm_rpc_xdr.c | 11 ++++++++--- + 1 file changed, 8 insertions(+), 3 deletions(-) + +diff --git a/src/lib/kadm5/kadm_rpc_xdr.c b/src/lib/kadm5/kadm_rpc_xdr.c +index 2892d41..94b1ce8 100644 +--- a/src/lib/kadm5/kadm_rpc_xdr.c ++++ b/src/lib/kadm5/kadm_rpc_xdr.c +@@ -390,6 +390,7 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp, + int v) + { + unsigned int n; ++ bool_t r; + + if (!xdr_krb5_principal(xdrs, &objp->principal)) { + return (FALSE); +@@ -443,6 +444,9 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp, + if (!xdr_krb5_int16(xdrs, &objp->n_key_data)) { + return (FALSE); + } ++ if (xdrs->x_op == XDR_DECODE && objp->n_key_data < 0) { ++ return (FALSE); ++ } + if (!xdr_krb5_int16(xdrs, &objp->n_tl_data)) { + return (FALSE); + } +@@ -451,9 +455,10 @@ _xdr_kadm5_principal_ent_rec(XDR *xdrs, kadm5_principal_ent_rec *objp, + return FALSE; + } + n = objp->n_key_data; +- if (!xdr_array(xdrs, (caddr_t *) &objp->key_data, +- &n, ~0, sizeof(krb5_key_data), +- xdr_krb5_key_data_nocontents)) { ++ r = xdr_array(xdrs, (caddr_t *) &objp->key_data, &n, objp->n_key_data, ++ sizeof(krb5_key_data), xdr_krb5_key_data_nocontents); ++ objp->n_key_data = n; ++ if (!r) { + return (FALSE); + } + +-- +2.40.0 |