new file mode 100644
@@ -0,0 +1,60 @@
+From b5e8bc74b2b05aa557f663fe227b94d2bc64fbd8 Mon Sep 17 00:00:00 2001
+From: Panu Matilainen <pmatilai@redhat.com>
+Date: Thu, 30 Sep 2021 09:51:10 +0300
+Subject: [PATCH] Process MPI's from all kinds of signatures
+
+No immediate effect but needed by the following commits.
+
+Dependent patch:
+CVE: CVE-2021-3521
+Upstream-Status: Backport [https://github.com/rpm-software-management/rpm/commit/b5e8bc74b2b05aa557f663fe227b94d2bc64fbd8]
+Signed-off-by: Riyaz Khan <Riyaz.Khan@kpit.com>
+
+---
+ rpmio/rpmpgp.c | 12 +++++-------
+ 1 file changed, 5 insertions(+), 7 deletions(-)
+
+diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
+index ee5c81e246..340de5fc9a 100644
+--- a/rpmio/rpmpgp.c
++++ b/rpmio/rpmpgp.c
+@@ -511,7 +511,7 @@ pgpDigAlg pgpDigAlgFree(pgpDigAlg alg)
+ return NULL;
+ }
+
+-static int pgpPrtSigParams(pgpTag tag, uint8_t pubkey_algo, uint8_t sigtype,
++static int pgpPrtSigParams(pgpTag tag, uint8_t pubkey_algo,
+ const uint8_t *p, const uint8_t *h, size_t hlen,
+ pgpDigParams sigp)
+ {
+@@ -524,10 +524,8 @@ static int pgpPrtSigParams(pgpTag tag, uint8_t pubkey_algo, uint8_t sigtype,
+ int mpil = pgpMpiLen(p);
+ if (p + mpil > pend)
+ break;
+- if (sigtype == PGPSIGTYPE_BINARY || sigtype == PGPSIGTYPE_TEXT) {
+- if (sigalg->setmpi(sigalg, i, p))
+- break;
+- }
++ if (sigalg->setmpi(sigalg, i, p))
++ break;
+ p += mpil;
+ }
+
+@@ -600,7 +598,7 @@ static int pgpPrtSig(pgpTag tag, const uint8_t *h, size_t hlen,
+ }
+
+ p = ((uint8_t *)v) + sizeof(*v);
+- rc = pgpPrtSigParams(tag, v->pubkey_algo, v->sigtype, p, h, hlen, _digp);
++ rc = pgpPrtSigParams(tag, v->pubkey_algo, p, h, hlen, _digp);
+ } break;
+ case 4:
+ { pgpPktSigV4 v = (pgpPktSigV4)h;
+@@ -658,7 +656,7 @@ static int pgpPrtSig(pgpTag tag, const uint8_t *h, size_t hlen,
+ if (p > (h + hlen))
+ return 1;
+
+- rc = pgpPrtSigParams(tag, v->pubkey_algo, v->sigtype, p, h, hlen, _digp);
++ rc = pgpPrtSigParams(tag, v->pubkey_algo, p, h, hlen, _digp);
+ } break;
+ default:
+ rpmlog(RPMLOG_WARNING, _("Unsupported version of key: V%d\n"), version);
new file mode 100644
@@ -0,0 +1,55 @@
+From 9f03f42e2614a68f589f9db8fe76287146522c0c Mon Sep 17 00:00:00 2001
+From: Panu Matilainen <pmatilai@redhat.com>
+Date: Thu, 30 Sep 2021 09:56:20 +0300
+Subject: [PATCH] Refactor pgpDigParams construction to helper function
+
+No functional changes, just to reduce code duplication and needed by
+the following commits.
+
+Dependent patch:
+CVE: CVE-2021-3521
+Upstream-Status: Backport [https://github.com/rpm-software-management/rpm/commit/9f03f42e2614a68f589f9db8fe76287146522c0c]
+Signed-off-by: Riyaz Khan <Riyaz.Khan@kpit.com>
+
+---
+ rpmio/rpmpgp.c | 13 +++++++++----
+ 1 file changed, 9 insertions(+), 4 deletions(-)
+
+diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
+index 340de5fc9a..aad7c275c9 100644
+--- a/rpmio/rpmpgp.c
++++ b/rpmio/rpmpgp.c
+@@ -1055,6 +1055,13 @@ unsigned int pgpDigParamsAlgo(pgpDigParams digp, unsigned int algotype)
+ return algo;
+ }
+
++static pgpDigParams pgpDigParamsNew(uint8_t tag)
++{
++ pgpDigParams digp = xcalloc(1, sizeof(*digp));
++ digp->tag = tag;
++ return digp;
++}
++
+ int pgpPrtParams(const uint8_t * pkts, size_t pktlen, unsigned int pkttype,
+ pgpDigParams * ret)
+ {
+@@ -1072,8 +1079,7 @@ int pgpPrtParams(const uint8_t * pkts, size_t pktlen, unsigned int pkttype,
+ if (pkttype && pkt.tag != pkttype) {
+ break;
+ } else {
+- digp = xcalloc(1, sizeof(*digp));
+- digp->tag = pkt.tag;
++ digp = pgpDigParamsNew(pkt.tag);
+ }
+ }
+
+@@ -1121,8 +1127,7 @@ int pgpPrtParamsSubkeys(const uint8_t *pkts, size_t pktlen,
+ digps = xrealloc(digps, alloced * sizeof(*digps));
+ }
+
+- digps[count] = xcalloc(1, sizeof(**digps));
+- digps[count]->tag = PGPTAG_PUBLIC_SUBKEY;
++ digps[count] = pgpDigParamsNew(PGPTAG_PUBLIC_SUBKEY);
+ /* Copy UID from main key to subkey */
+ digps[count]->userid = xstrdup(mainkey->userid);
+
new file mode 100644
@@ -0,0 +1,34 @@
+From 5ff86764b17f31535cb247543a90dd739076ec38 Mon Sep 17 00:00:00 2001
+From: Demi Marie Obenour <demi@invisiblethingslab.com>
+Date: Thu, 6 May 2021 18:34:45 -0400
+Subject: [PATCH] Do not allow extra packets to follow a signature
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+According to RFC 4880 § 11.4, a detached signature is “simply a
+Signature packet”. Therefore, extra packets following a detached
+signature are not allowed.
+
+Dependent patch:
+CVE: CVE-2021-3521
+Upstream-Status: Backport [https://github.com/rpm-software-management/rpm/commit/5ff86764b17f31535cb247543a90dd739076ec38]
+Signed-off-by: Riyaz Khan <Riyaz.Khan@kpit.com>
+
+---
+ rpmio/rpmpgp.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
+index f1a99e7169..5b346a8253 100644
+--- a/rpmio/rpmpgp.c
++++ b/rpmio/rpmpgp.c
+@@ -1068,6 +1068,8 @@ int pgpPrtParams(const uint8_t * pkts, size_t pktlen, unsigned int pkttype,
+ break;
+
+ p += (pkt.body - pkt.head) + pkt.blen;
++ if (pkttype == PGPTAG_SIGNATURE)
++ break;
+ }
+
+ rc = (digp && (p == pend)) ? 0 : -1;
new file mode 100644
@@ -0,0 +1,330 @@
+From bd36c5dc9fb6d90c46fbfed8c2d67516fc571ec8 Mon Sep 17 00:00:00 2001
+From: Panu Matilainen <pmatilai@redhat.com>
+Date: Thu, 30 Sep 2021 09:59:30 +0300
+Subject: [PATCH] Validate and require subkey binding signatures on PGP public
+ keys
+
+All subkeys must be followed by a binding signature by the primary key
+as per the OpenPGP RFC, enforce the presence and validity in the parser.
+
+The implementation is as kludgey as they come to work around our
+simple-minded parser structure without touching API, to maximise
+backportability. Store all the raw packets internally as we decode them
+to be able to access previous elements at will, needed to validate ordering
+and access the actual data. Add testcases for manipulated keys whose
+import previously would succeed.
+
+Depends on the two previous commits:
+7b399fcb8f52566e6f3b4327197a85facd08db91 and
+236b802a4aa48711823a191d1b7f753c82a89ec5
+
+CVE: CVE-2021-3521
+Upstream-Status: Backport [https://github.com/rpm-software-management/rpm/commit/bd36c5dc9fb6d90c46fbfed8c2d67516fc571ec8]
+Comment: Hunk refreshed
+Signed-off-by: Riyaz Khan <Riyaz.Khan@kpit.com>
+
+Fixes CVE-2021-3521.
+---
+ rpmio/rpmpgp.c | 98 +++++++++++++++++--
+ tests/Makefile.am | 3 +
+ tests/data/keys/CVE-2021-3521-badbind.asc | 25 +++++
+ .../data/keys/CVE-2021-3521-nosubsig-last.asc | 25 +++++
+ tests/data/keys/CVE-2021-3521-nosubsig.asc | 37 +++++++
+ tests/rpmsigdig.at | 28 ++++++
+ 6 files changed, 209 insertions(+), 7 deletions(-)
+ create mode 100644 tests/data/keys/CVE-2021-3521-badbind.asc
+ create mode 100644 tests/data/keys/CVE-2021-3521-nosubsig-last.asc
+ create mode 100644 tests/data/keys/CVE-2021-3521-nosubsig.asc
+
+diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
+index aad7c275c9..d70802ae86 100644
+--- a/rpmio/rpmpgp.c
++++ b/rpmio/rpmpgp.c
+@@ -1004,37 +1004,121 @@ static pgpDigParams pgpDigParamsNew(uint8_t tag)
+ return digp;
+ }
+
++static int hashKey(DIGEST_CTX hash, const struct pgpPkt *pkt, int exptag)
++{
++ int rc = -1;
++ if (pkt->tag == exptag) {
++ uint8_t head[] = {
++ 0x99,
++ (pkt->blen >> 8),
++ (pkt->blen ),
++ };
++
++ rpmDigestUpdate(hash, head, 3);
++ rpmDigestUpdate(hash, pkt->body, pkt->blen);
++ rc = 0;
++ }
++ return rc;
++}
++
++static int pgpVerifySelf(pgpDigParams key, pgpDigParams selfsig,
++ const struct pgpPkt *all, int i)
++{
++ int rc = -1;
++ DIGEST_CTX hash = NULL;
++
++ switch (selfsig->sigtype) {
++ case PGPSIGTYPE_SUBKEY_BINDING:
++ hash = rpmDigestInit(selfsig->hash_algo, 0);
++ if (hash) {
++ rc = hashKey(hash, &all[0], PGPTAG_PUBLIC_KEY);
++ if (!rc)
++ rc = hashKey(hash, &all[i-1], PGPTAG_PUBLIC_SUBKEY);
++ }
++ break;
++ default:
++ /* ignore types we can't handle */
++ rc = 0;
++ break;
++ }
++
++ if (hash && rc == 0)
++ rc = pgpVerifySignature(key, selfsig, hash);
++
++ rpmDigestFinal(hash, NULL, NULL, 0);
++
++ return rc;
++}
++
+ int pgpPrtParams(const uint8_t * pkts, size_t pktlen, unsigned int pkttype,
+ pgpDigParams * ret)
+ {
+ const uint8_t *p = pkts;
+ const uint8_t *pend = pkts + pktlen;
+ pgpDigParams digp = NULL;
+- struct pgpPkt pkt;
++ pgpDigParams selfsig = NULL;
++ int i = 0;
++ int alloced = 16; /* plenty for normal cases */
++ struct pgpPkt *all = xmalloc(alloced * sizeof(*all));
+ int rc = -1; /* assume failure */
++ int expect = 0;
++ int prevtag = 0;
+
+ while (p < pend) {
+- if (decodePkt(p, (pend - p), &pkt))
++ struct pgpPkt *pkt = &all[i];
++ if (decodePkt(p, (pend - p), pkt))
+ break;
+
+ if (digp == NULL) {
+- if (pkttype && pkt.tag != pkttype) {
++ if (pkttype && pkt->tag != pkttype) {
+ break;
+ } else {
+- digp = pgpDigParamsNew(pkt.tag);
++ digp = pgpDigParamsNew(pkt->tag);
+ }
+ }
+
+- if (pgpPrtPkt(&pkt, digp))
++ if (expect) {
++ if (pkt->tag != expect)
++ break;
++ selfsig = pgpDigParamsNew(pkt->tag);
++ }
++
++ if (pgpPrtPkt(pkt, selfsig ? selfsig : digp))
+ break;
+
+- p += (pkt.body - pkt.head) + pkt.blen;
++ if (selfsig) {
++ /* subkeys must be followed by binding signature */
++ if (prevtag == PGPTAG_PUBLIC_SUBKEY) {
++ if (selfsig->sigtype != PGPSIGTYPE_SUBKEY_BINDING)
++ break;
++ }
++
++ int xx = pgpVerifySelf(digp, selfsig, all, i);
++
++ selfsig = pgpDigParamsFree(selfsig);
++ if (xx)
++ break;
++ expect = 0;
++ }
++
++ if (pkt->tag == PGPTAG_PUBLIC_SUBKEY)
++ expect = PGPTAG_SIGNATURE;
++ prevtag = pkt->tag;
++
++ i++;
++ p += (pkt->body - pkt->head) + pkt->blen;
+ if (pkttype == PGPTAG_SIGNATURE)
+ break;
++
++ if (alloced <= i) {
++ alloced *= 2;
++ all = xrealloc(all, alloced * sizeof(*all));
++ }
+ }
+
+- rc = (digp && (p == pend)) ? 0 : -1;
++ rc = (digp && (p == pend) && expect == 0) ? 0 : -1;
+
++ free(all);
+ if (ret && rc == 0) {
+ *ret = digp;
+ } else {
+diff --git a/tests/Makefile.am b/tests/Makefile.am
+index b4a2e2e1ce..bc535d2833 100644
+--- a/tests/Makefile.am
++++ b/tests/Makefile.am
+@@ -87,6 +87,9 @@ EXTRA_DIST += data/SPECS/hello-config-buildid.spec
+ EXTRA_DIST += data/SPECS/hello-cd.spec
+ EXTRA_DIST += data/keys/rpm.org-rsa-2048-test.pub
+ EXTRA_DIST += data/keys/rpm.org-rsa-2048-test.secret
++EXTRA_DIST += data/keys/CVE-2021-3521-badbind.asc
++EXTRA_DIST += data/keys/CVE-2021-3521-nosubsig.asc
++EXTRA_DIST += data/keys/CVE-2021-3521-nosubsig-last.asc
+ EXTRA_DIST += data/macros.testfile
+
+ # testsuite voodoo
+diff --git a/tests/data/keys/CVE-2021-3521-badbind.asc b/tests/data/keys/CVE-2021-3521-badbind.asc
+new file mode 100644
+index 0000000000..aea00f9d7a
+--- /dev/null
++++ b/tests/data/keys/CVE-2021-3521-badbind.asc
+@@ -0,0 +1,25 @@
++-----BEGIN PGP PUBLIC KEY BLOCK-----
++Version: rpm-4.17.90 (NSS-3)
++
++mQENBFjmORgBCAC7TMEk6wnjSs8Dr4yqSScWdU2pjcqrkTxuzdWvowcIUPZI0w/g
++HkRqGd4apjvY2V15kjL10gk3QhFP3pZ/9p7zh8o8NHX7aGdSGDK7NOq1eFaErPRY
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++L0OGwZSr9m5s17VXxfspgU5ugc8kBJfzABEBAAE=
++=WCfs
++-----END PGP PUBLIC KEY BLOCK-----
++
+diff --git a/tests/data/keys/CVE-2021-3521-nosubsig-last.asc b/tests/data/keys/CVE-2021-3521-nosubsig-last.asc
+new file mode 100644
+index 0000000000..aea00f9d7a
+--- /dev/null
++++ b/tests/data/keys/CVE-2021-3521-nosubsig-last.asc
+@@ -0,0 +1,25 @@
++-----BEGIN PGP PUBLIC KEY BLOCK-----
++Version: rpm-4.17.90 (NSS-3)
++
++mQENBFjmORgBCAC7TMEk6wnjSs8Dr4yqSScWdU2pjcqrkTxuzdWvowcIUPZI0w/g
++HkRqGd4apjvY2V15kjL10gk3QhFP3pZ/9p7zh8o8NHX7aGdSGDK7NOq1eFaErPRY
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++L0OGwZSr9m5s17VXxfspgU5ugc8kBJfzABEBAAE=
++=WCfs
++-----END PGP PUBLIC KEY BLOCK-----
++
+diff --git a/tests/data/keys/CVE-2021-3521-nosubsig.asc b/tests/data/keys/CVE-2021-3521-nosubsig.asc
+new file mode 100644
+index 0000000000..3a2e7417f8
+--- /dev/null
++++ b/tests/data/keys/CVE-2021-3521-nosubsig.asc
+@@ -0,0 +1,37 @@
++-----BEGIN PGP PUBLIC KEY BLOCK-----
++Version: rpm-4.17.90 (NSS-3)
++
++mQENBFjmORgBCAC7TMEk6wnjSs8Dr4yqSScWdU2pjcqrkTxuzdWvowcIUPZI0w/g
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++VcRhOhlXBvZq23NtskkKoPvW+ZlMuxbRDG48pGBtxhjOngriVUGceEWsXww5Q7En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++=rRop
++-----END PGP PUBLIC KEY BLOCK-----
++
+diff --git a/tests/rpmsigdig.at b/tests/rpmsigdig.at
+index 0f8f2b4884..c8b9f139e1 100644
+--- a/tests/rpmsigdig.at
++++ b/tests/rpmsigdig.at
+@@ -240,6 +240,34 @@ gpg(185e6146f00650f8) = 4:185e6146f00650f8-58e63918
+ [])
+ AT_CLEANUP
+
++AT_SETUP([rpmkeys --import invalid keys])
++AT_KEYWORDS([rpmkeys import])
++RPMDB_INIT
++
++AT_CHECK([
++runroot rpmkeys --import /data/keys/CVE-2021-3521-badbind.asc
++],
++[1],
++[],
++[error: /data/keys/CVE-2021-3521-badbind.asc: key 1 import failed.]
++)
++AT_CHECK([
++runroot rpmkeys --import /data/keys/CVE-2021-3521-nosubsig.asc
++],
++[1],
++[],
++[error: /data/keys/CVE-2021-3521-nosubsig.asc: key 1 import failed.]
++)
++
++AT_CHECK([
++runroot rpmkeys --import /data/keys/CVE-2021-3521-nosubsig-last.asc
++],
++[1],
++[],
++[error: /data/keys/CVE-2021-3521-nosubsig-last.asc: key 1 import failed.]
++)
++AT_CLEANUP
++
+ # ------------------------------
+ # Test pre-built package verification
+ AT_SETUP([rpmkeys -K <signed> 1])
+
@@ -47,6 +47,10 @@ SRC_URI = "git://github.com/rpm-software-management/rpm;branch=rpm-4.14.x;protoc
file://0001-rpmio-Fix-lzopen_internal-mode-parsing-when-Tn-is-us.patch \
file://CVE-2021-3421.patch \
file://CVE-2021-20266.patch \
+ file://CVE-2021-3521-01.patch \
+ file://CVE-2021-3521-02.patch \
+ file://CVE-2021-3521-03.patch \
+ file://CVE-2021-3521.patch \
"
PE = "1"