packages/rpm
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fix CVE-2021-3521

Browse Source
This commit is contained in:
renmingshuai 2021-11-03 14:24:37 +08:00
parent 6569ba5d51
commit 58d833d8bb
6 changed files with 484 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
backport-0001-CVE-2021-3521.patch Normal file
View File

@ -0,0 +1,55 @@
From 7b399fcb8f52566e6f3b4327197a85facd08db91 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
---
rpmio/rpmpgp.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
index 33bef0b..b353fe6 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 (pend - p < mpil)
break;
- if (sigtype == PGPSIGTYPE_BINARY || sigtype == PGPSIGTYPE_TEXT) {
- if (sigalg->setmpi(sigalg, i, p))
- break;
- }
+ if (sigalg->setmpi(sigalg, i, p))
+ break;
p += mpil;
}
@@ -601,7 +599,7 @@ static int pgpPrtSig(pgpTag tag, const uint8_t *h, size_t hlen,
p = ((uint8_t *)v) + sizeof(*v);
_digp->data = p;
- 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;
@@ -660,7 +658,7 @@ static int pgpPrtSig(pgpTag tag, const uint8_t *h, size_t hlen,
return 1;
_digp->data = p;
- 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);
--
2.27.0

49
backport-0002-CVE-2021-3521.patch Normal file
View File

@ -0,0 +1,49 @@
From 236b802a4aa48711823a191d1b7f753c82a89ec5 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
---
rpmio/rpmpgp.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
index b353fe6..ee97f07 100644
--- a/rpmio/rpmpgp.c
+++ b/rpmio/rpmpgp.c
@@ -1000,6 +1000,13 @@ 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)
{
@@ -1017,8 +1024,7 @@ 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);
}
}
@@ -1066,8 +1072,7 @@ 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);
--
2.27.0

309
backport-0003-CVE-2021-3521.patch Normal file
View File

@ -0,0 +1,309 @@
From e233fb844adda74a5199057d1fd7fa20d994564d 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
---
rpmio/rpmpgp.c | 98 +++++++++++++++++--
tests/Makefile.am | 3 +
tests/data/keys/CVE-2021-3521-badbind.asc | 24 +++++
.../data/keys/CVE-2021-3521-nosubsig-last.asc | 25 +++++
tests/data/keys/CVE-2021-3521-nosubsig.asc | 36 +++++++
tests/rpmsigdig.at | 28 ++++++
6 files changed, 207 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 ee97f07..2b6e173 100644
--- a/rpmio/rpmpgp.c
+++ b/rpmio/rpmpgp.c
@@ -1007,37 +1007,121 @@ 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 ab92353..585e7a2 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -104,6 +104,9 @@ 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
EXTRA_DIST += data/macros.debug
EXTRA_DIST += data/SOURCES/foo.c
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 0000000..701ffda
--- /dev/null
+++ b/tests/data/keys/CVE-2021-3521-badbind.asc
@@ -0,0 +1,24 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: rpm-4.17.90 (NSS-3)
+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+=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 0000000..2aaa0a0
--- /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)
+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+=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 0000000..9743d55
--- /dev/null
+++ b/tests/data/keys/CVE-2021-3521-nosubsig.asc
@@ -0,0 +1,36 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: rpm-4.17.90 (NSS-3)
+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+=rRop
+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/tests/rpmsigdig.at b/tests/rpmsigdig.at
index 91c205e..c780deb 100644
--- a/tests/rpmsigdig.at
+++ b/tests/rpmsigdig.at
@@ -225,6 +225,34 @@ 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])
--
2.27.0

28
backport-Do-not-allow-extra-packets-to-follow-a-signature.patch Normal file
View File

@ -0,0 +1,28 @@
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
Conflict:NA
Reference:https://github.com/rpm-software-management/rpm/commit/5ff86764b17f31535cb247543a90dd739076ec38
---
rpmio/rpmpgp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
index b174a40..629378a 100644
--- a/rpmio/rpmpgp.c
+++ b/rpmio/rpmpgp.c
@@ -1025,6 +1025,8 @@ 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;
--
2.27.0

31
backport-Reduce-undefined-pointer-arithmetic.patch Normal file
View File

@ -0,0 +1,31 @@
From 072588ca7908ef894be4161066c9384edaadd748 Mon Sep 17 00:00:00 2001
From: Demi Marie Obenour <demi@invisiblethingslab.com>
Date: Thu, 17 Jun 2021 14:11:54 -0400
Subject: [PATCH] Reduce undefined pointer arithmetic
Conflict:NA
Reference:https://github.com/rpm-software-management/rpm/commit/072588ca7908ef894be4161066c9384edaadd748
---
rpmio/rpmpgp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/rpmio/rpmpgp.c b/rpmio/rpmpgp.c
index 436c46d..b174a40 100644
--- a/rpmio/rpmpgp.c
+++ b/rpmio/rpmpgp.c
@@ -520,9 +520,9 @@ static int pgpPrtSigParams(pgpTag tag, uint8_t pubkey_algo, uint8_t sigtype,
int i;
pgpDigAlg sigalg = pgpSignatureNew(pubkey_algo);
- for (i = 0; i < sigalg->mpis && p + 2 <= pend; i++) {
+ for (i = 0; i < sigalg->mpis && pend - p >= 2; i++) {
int mpil = pgpMpiLen(p);
- if (p + mpil > pend)
+ if (pend - p < mpil)
break;
if (sigtype == PGPSIGTYPE_BINARY || sigtype == PGPSIGTYPE_TEXT) {
if (sigalg->setmpi(sigalg, i, p))
--
2.27.0

13
rpm.spec
View File

@ -1,6 +1,6 @@
Name: rpm
Version: 4.15.1
Release: 30
Release: 31
Summary: RPM Package Manager
License: GPLv2+
URL: http://www.rpm.org/
@ -54,6 +54,11 @@ Patch43: CVE-2021-20266.patch
Patch44: backport-build-prioritize-large-packages.patch
Patch45: backport-Fix-data-race-in-packageBinaries-function.patch
Patch46: fix-lsetxattr-error-in-container.patch
Patch47: backport-Reduce-undefined-pointer-arithmetic.patch
Patch48: backport-Do-not-allow-extra-packets-to-follow-a-signature.patch
Patch49: backport-0001-CVE-2021-3521.patch
Patch50: backport-0002-CVE-2021-3521.patch
Patch51: backport-0003-CVE-2021-3521.patch
BuildRequires: gcc autoconf automake libtool make gawk popt-devel openssl-devel readline-devel libdb-devel
BuildRequires: zlib-devel libzstd-devel xz-devel bzip2-devel libarchive-devel ima-evm-utils-devel
@ -316,6 +321,12 @@ make check || (cat tests/rpmtests.log; exit 0)
%{_mandir}/man1/gendiff.1*
%changelog
* Wed Nov 03 2021 tianwei <tianwei12@huawei.com> - 4.15.1-31
- Type:cve
- ID:NA
- SUG:NA
- DESC:fix CVE-2021-3521
* Mon Sep 13 2021 zhangtianxing<zhangtianxing3@huawei.com> - 4.15.1-30
- Type:bugfix
- ID:NA