diff options
Diffstat (limited to 'meta/recipes-support/libksba/libksba')
| -rw-r--r-- | meta/recipes-support/libksba/libksba/CVE-2022-3515.patch | 47 | ||||
| -rw-r--r-- | meta/recipes-support/libksba/libksba/CVE-2022-47629.patch | 69 |
2 files changed, 116 insertions, 0 deletions
diff --git a/meta/recipes-support/libksba/libksba/CVE-2022-3515.patch b/meta/recipes-support/libksba/libksba/CVE-2022-3515.patch new file mode 100644 index 0000000000..ff9f2f9275 --- /dev/null +++ b/meta/recipes-support/libksba/libksba/CVE-2022-3515.patch @@ -0,0 +1,47 @@ +From 4b7d9cd4a018898d7714ce06f3faf2626c14582b Mon Sep 17 00:00:00 2001 +From: Werner Koch <wk@gnupg.org> +Date: Wed, 5 Oct 2022 14:19:06 +0200 +Subject: [PATCH] Detect a possible overflow directly in the TLV parser. + +* src/ber-help.c (_ksba_ber_read_tl): Check for overflow of a commonly +used sum. +-- + +It is quite common to have checks like + + if (ti.nhdr + ti.length >= DIM(tmpbuf)) + return gpg_error (GPG_ERR_TOO_LARGE); + +This patch detects possible integer overflows immmediately when +creating the TI object. + +Reported-by: ZDI-CAN-18927, ZDI-CAN-18928, ZDI-CAN-18929 + + +Upstream-Status: Backport [https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=patch;h=4b7d9cd4a018898d7714ce06f3faf2626c14582b] +CVE: CVE-2022-3515 +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + src/ber-help.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/src/ber-help.c b/src/ber-help.c +index 81c31ed..56efb6a 100644 +--- a/src/ber-help.c ++++ b/src/ber-help.c +@@ -182,6 +182,12 @@ _ksba_ber_read_tl (ksba_reader_t reader, struct tag_info *ti) + ti->length = len; + } + ++ if (ti->length > ti->nhdr && (ti->nhdr + ti->length) < ti->length) ++ { ++ ti->err_string = "header+length would overflow"; ++ return gpg_error (GPG_ERR_EOVERFLOW); ++ } ++ + /* Without this kludge some example certs can't be parsed */ + if (ti->class == CLASS_UNIVERSAL && !ti->tag) + ti->length = 0; +-- +2.11.0 + diff --git a/meta/recipes-support/libksba/libksba/CVE-2022-47629.patch b/meta/recipes-support/libksba/libksba/CVE-2022-47629.patch new file mode 100644 index 0000000000..b09d0eb557 --- /dev/null +++ b/meta/recipes-support/libksba/libksba/CVE-2022-47629.patch @@ -0,0 +1,69 @@ +From b17444b3c47e32c77a3ba5335ae30ccbadcba3cf Mon Sep 17 00:00:00 2001 +From: Werner Koch <wk@gnupg.org> +Date: Tue, 22 Nov 2022 16:36:46 +0100 +Subject: [PATCH] Fix an integer overflow in the CRL signature parser. + +* src/crl.c (parse_signature): N+N2 now checked for overflow. + +* src/ocsp.c (parse_response_extensions): Do not accept too large +values. +(parse_single_extensions): Ditto. +-- + +The second patch is an extra safegourd not related to the reported +bug. + +GnuPG-bug-id: 6284 +Reported-by: Joseph Surin, elttam +CVE: CVE-2022-47629 +https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=f61a5ea4e0f6a80fd4b28ef0174bee77793cf070 +Upstream-Status: Backport +Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com> +--- + src/crl.c | 2 +- + src/ocsp.c | 12 ++++++++++++ + 2 files changed, 13 insertions(+), 1 deletion(-) + +diff --git a/src/crl.c b/src/crl.c +index 87a3fa3..9d3028e 100644 +--- a/src/crl.c ++++ b/src/crl.c +@@ -1434,7 +1434,7 @@ parse_signature (ksba_crl_t crl) + && !ti.is_constructed) ) + return gpg_error (GPG_ERR_INV_CRL_OBJ); + n2 = ti.nhdr + ti.length; +- if (n + n2 >= DIM(tmpbuf)) ++ if (n + n2 >= DIM(tmpbuf) || (n + n2) < n) + return gpg_error (GPG_ERR_TOO_LARGE); + memcpy (tmpbuf+n, ti.buf, ti.nhdr); + err = read_buffer (crl->reader, tmpbuf+n+ti.nhdr, ti.length); +diff --git a/src/ocsp.c b/src/ocsp.c +index 4b26f8d..c41234e 100644 +--- a/src/ocsp.c ++++ b/src/ocsp.c +@@ -912,6 +912,12 @@ parse_response_extensions (ksba_ocsp_t ocsp, + else + ocsp->good_nonce = 1; + } ++ if (ti.length > (1<<24)) ++ { ++ /* Bail out on much too large objects. */ ++ err = gpg_error (GPG_ERR_BAD_BER); ++ goto leave; ++ } + ex = xtrymalloc (sizeof *ex + strlen (oid) + ti.length); + if (!ex) + { +@@ -979,6 +985,12 @@ parse_single_extensions (struct ocsp_reqitem_s *ri, + err = parse_octet_string (&data, &datalen, &ti); + if (err) + goto leave; ++ if (ti.length > (1<<24)) ++ { ++ /* Bail out on much too large objects. */ ++ err = gpg_error (GPG_ERR_BAD_BER); ++ goto leave; ++ } + ex = xtrymalloc (sizeof *ex + strlen (oid) + ti.length); + if (!ex) + { |