diff --git a/SOURCES/0272-envblk-Fix-buffer-overrun-when-attempting-to-shrink-.patch b/SOURCES/0272-envblk-Fix-buffer-overrun-when-attempting-to-shrink-.patch new file mode 100644 index 0000000..293500b --- /dev/null +++ b/SOURCES/0272-envblk-Fix-buffer-overrun-when-attempting-to-shrink-.patch @@ -0,0 +1,62 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Javier Martinez Canillas +Date: Tue, 12 May 2020 01:00:51 +0200 +Subject: [PATCH] envblk: Fix buffer overrun when attempting to shrink a + variable value +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +If an existing variable is set with a value whose length is smaller than +the current value, a memory corruption can happen due copying padding '#' +characters outside of the environment block buffer. + +This is caused by a wrong calculation of the previous free space position +after moving backward the characters that followed the old variable value. + +That position is calculated to fill the remaining of the buffer with the +padding '#' characters. But since isn't calculated correctly, it can lead +to copies outside of the buffer. + +The issue can be reproduced by creating a variable with a large value and +then try to set a new value that is much smaller: + +$ grub2-editenv --version +grub2-editenv (GRUB) 2.04 + +$ grub2-editenv env create + +$ grub2-editenv env set a="$(for i in {1..500}; do var="b$var"; done; echo $var)" + +$ wc -c env +1024 grubenv + +$ grub2-editenv env set a="$(for i in {1..50}; do var="b$var"; done; echo $var)" +malloc(): corrupted top size +Aborted (core dumped) + +$ wc -c env +0 grubenv + +Resolves: rhbz#1836196 + +Reported-by: Renaud Métrich +Signed-off-by: Javier Martinez Canillas +Patch-cc: Daniel Kiper +--- + grub-core/lib/envblk.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/grub-core/lib/envblk.c b/grub-core/lib/envblk.c +index 230e0e9d9ab..2e4e78b132d 100644 +--- a/grub-core/lib/envblk.c ++++ b/grub-core/lib/envblk.c +@@ -143,7 +143,7 @@ grub_envblk_set (grub_envblk_t envblk, const char *name, const char *value) + /* Move the following characters backward, and fill the new + space with harmless characters. */ + grub_memmove (p + vl, p + len, pend - (p + len)); +- grub_memset (space + len - vl, '#', len - vl); ++ grub_memset (space - (len - vl), '#', len - vl); + } + else + /* Move the following characters forward. */ diff --git a/SOURCES/centos-ca-secureboot.der b/SOURCES/centos-ca-secureboot.der deleted file mode 100644 index 44a2563..0000000 Binary files a/SOURCES/centos-ca-secureboot.der and /dev/null differ diff --git a/SOURCES/centossecureboot001.crt b/SOURCES/centossecureboot001.crt deleted file mode 100644 index 321c4ec..0000000 --- a/SOURCES/centossecureboot001.crt +++ /dev/null @@ -1,81 +0,0 @@ -Certificate: - Data: - Version: 3 (0x2) - Serial Number: - b6:16:15:71:72:fb:31:7e - Signature Algorithm: sha256WithRSAEncryption - Issuer: CN=CentOS Secure Boot (CA key 1)/emailAddress=security@centos.org - Validity - Not Before: Aug 1 11:47:30 2018 GMT - Not After : Dec 31 11:47:30 2037 GMT - Subject: CN=CentOS Secure Boot (key 1)/emailAddress=security@centos.org - Subject Public Key Info: - Public Key Algorithm: rsaEncryption - RSA Public Key: (2048 bit) - Modulus (2048 bit): - 00:c1:a3:6a:f4:2d:71:83:6c:21:ca:0c:b7:ac:fa: - 76:80:43:03:40:87:5d:de:e9:1e:df:ad:e7:2b:51: - cb:f8:31:0f:9a:db:ab:23:25:04:11:05:57:7d:f2: - 4b:8d:1e:b3:75:78:1d:b9:57:8b:18:0b:bb:7e:e3: - 24:0f:6a:40:5f:2b:4f:03:a5:85:94:d2:f9:08:a0: - bc:db:a5:ea:4f:7f:e8:7c:d1:a9:f8:f0:9c:25:18: - 00:14:c4:c4:35:7d:1d:4c:8a:8d:95:f8:ed:65:97: - a5:a4:da:7d:cb:f0:33:3b:b7:03:94:68:47:05:57: - 6c:96:91:ac:14:f2:e3:f6:6d:4a:18:cf:68:8a:35: - 6f:8e:26:99:7f:db:c9:83:54:c2:c3:bf:ad:45:a0: - aa:a0:86:5f:20:b1:86:1b:ae:b7:28:15:11:f9:65: - 53:5d:70:33:9b:a3:c7:b5:c8:11:ff:55:3b:e7:46: - f1:6c:6b:8c:bb:f2:9f:36:23:b1:2d:23:2f:8f:4f: - 6c:a8:cc:ae:f5:56:9e:22:6c:0e:9a:4a:b1:bd:b2: - 76:15:5c:05:85:b8:5e:dc:8c:a5:c3:e0:75:51:a4: - 94:9b:03:2e:7b:f8:d3:b9:dd:7f:88:ce:2e:2f:28: - 4c:b4:92:2f:e6:e0:67:0a:d0:ff:c5:d2:79:a6:ef: - 94:0f - Exponent: 65537 (0x10001) - X509v3 extensions: - X509v3 Basic Constraints: critical - CA:FALSE - X509v3 Key Usage: - Digital Signature - X509v3 Subject Key Identifier: - F0:37:C6:EA:EC:36:D4:05:7A:52:6C:0E:C6:D5:A9:5B:32:4E:E1:29 - X509v3 Authority Key Identifier: - keyid:54:EC:81:85:89:3E:E9:1A:DB:08:F7:44:88:54:7E:8E:3F:74:3A:F3 - - Signature Algorithm: sha256WithRSAEncryption - 97:97:ba:a6:0b:5b:bb:84:39:2e:ef:8b:51:9a:89:bb:65:3c: - dc:15:d0:5a:88:c5:af:ce:93:f5:c1:74:98:15:59:a9:38:da: - 11:fd:46:d5:4f:23:7c:03:1f:ae:0c:70:93:94:a7:61:2f:4b: - 2f:5f:bb:cc:8a:d7:4a:24:66:73:85:b4:19:13:fc:6a:61:4a: - 28:1f:a2:38:f4:72:90:03:c4:3e:64:63:8b:fb:15:22:22:4e: - b9:43:d9:b4:3d:3a:60:c1:4d:3a:09:85:68:7a:bc:3b:f9:ef: - f3:f5:e9:c9:4f:80:8c:c6:e9:cb:ef:28:44:b0:5d:d4:9e:4f: - 0f:02:9a:65:aa:98:35:b4:6f:d2:80:e3:08:ef:12:d0:17:56: - a6:a1:42:1e:1d:ab:e5:33:c0:fd:88:0d:40:42:81:c8:27:30: - 17:07:57:3e:05:9d:aa:05:0e:5b:3a:79:b4:29:aa:7c:42:5a: - ad:43:59:fb:34:4d:dc:62:58:63:e4:fb:de:bb:fd:6c:4e:97: - 58:f4:b9:99:4a:71:fe:7f:16:50:55:25:46:39:96:9b:88:6c: - 75:19:33:9e:70:b3:04:82:fe:16:a8:8e:22:47:83:6d:16:77: - da:26:ad:31:d8:06:6d:c5:7e:46:4b:21:ab:ae:ec:2a:93:71: - da:7f:89:1d ------BEGIN CERTIFICATE----- -MIIDdTCCAl2gAwIBAgIJALYWFXFy+zF+MA0GCSqGSIb3DQEBCwUAMEwxJjAkBgNV -BAMMHUNlbnRPUyBTZWN1cmUgQm9vdCAoQ0Ega2V5IDEpMSIwIAYJKoZIhvcNAQkB -FhNzZWN1cml0eUBjZW50b3Mub3JnMB4XDTE4MDgwMTExNDczMFoXDTM3MTIzMTEx -NDczMFowSTEjMCEGA1UEAxMaQ2VudE9TIFNlY3VyZSBCb290IChrZXkgMSkxIjAg -BgkqhkiG9w0BCQEWE3NlY3VyaXR5QGNlbnRvcy5vcmcwggEiMA0GCSqGSIb3DQEB -AQUAA4IBDwAwggEKAoIBAQDBo2r0LXGDbCHKDLes+naAQwNAh13e6R7frecrUcv4 -MQ+a26sjJQQRBVd98kuNHrN1eB25V4sYC7t+4yQPakBfK08DpYWU0vkIoLzbpepP -f+h80an48JwlGAAUxMQ1fR1Mio2V+O1ll6Wk2n3L8DM7twOUaEcFV2yWkawU8uP2 -bUoYz2iKNW+OJpl/28mDVMLDv61FoKqghl8gsYYbrrcoFRH5ZVNdcDObo8e1yBH/ -VTvnRvFsa4y78p82I7EtIy+PT2yozK71Vp4ibA6aSrG9snYVXAWFuF7cjKXD4HVR -pJSbAy57+NO53X+Izi4vKEy0ki/m4GcK0P/F0nmm75QPAgMBAAGjXTBbMAwGA1Ud -EwEB/wQCMAAwCwYDVR0PBAQDAgeAMB0GA1UdDgQWBBTwN8bq7DbUBXpSbA7G1alb -Mk7hKTAfBgNVHSMEGDAWgBRU7IGFiT7pGtsI90SIVH6OP3Q68zANBgkqhkiG9w0B -AQsFAAOCAQEAl5e6pgtbu4Q5Lu+LUZqJu2U83BXQWojFr86T9cF0mBVZqTjaEf1G -1U8jfAMfrgxwk5SnYS9LL1+7zIrXSiRmc4W0GRP8amFKKB+iOPRykAPEPmRji/sV -IiJOuUPZtD06YMFNOgmFaHq8O/nv8/XpyU+AjMbpy+8oRLBd1J5PDwKaZaqYNbRv -0oDjCO8S0BdWpqFCHh2r5TPA/YgNQEKByCcwFwdXPgWdqgUOWzp5tCmqfEJarUNZ -+zRN3GJYY+T73rv9bE6XWPS5mUpx/n8WUFUlRjmWm4hsdRkznnCzBIL+FqiOIkeD -bRZ32iatMdgGbcV+Rkshq67sKpNx2n+JHQ== ------END CERTIFICATE----- diff --git a/SOURCES/grub.patches b/SOURCES/grub.patches index ea7ecf6..67bf4df 100644 --- a/SOURCES/grub.patches +++ b/SOURCES/grub.patches @@ -269,3 +269,4 @@ Patch0268: 0268-Fix-PRIxGRUB_EFI_STATUS-definition.patch Patch0269: 0269-TPM-Print-messages-if-measuraments-fail-as-debug-ins.patch Patch0270: 0270-unix-platform-Initialize-variable-to-fix-grub-instal.patch Patch0271: 0271-blscfg-add-a-space-char-when-appending-fields-for-va.patch +Patch0272: 0272-envblk-Fix-buffer-overrun-when-attempting-to-shrink-.patch diff --git a/SPECS/grub2.spec b/SPECS/grub2.spec index 735691a..a61d573 100644 --- a/SPECS/grub2.spec +++ b/SPECS/grub2.spec @@ -7,7 +7,7 @@ Name: grub2 Epoch: 1 Version: 2.02 -Release: 81%{?dist} +Release: 82%{?dist}.1 Summary: Bootloader with support for Linux, Multiboot and more Group: System Environment/Base License: GPLv3+ @@ -24,8 +24,8 @@ Source6: gitignore Source8: strtoull_test.c Source9: 20-grub.install Source12: 99-grub-mkconfig.install -Source13: centos-ca-secureboot.der -Source14: centossecureboot001.crt +Source13: securebootca.cer +Source14: secureboot.cer %include %{SOURCE1} @@ -52,11 +52,7 @@ BuildRequires: pesign >= 0.99-8 BuildRequires: ccache %endif -%if 0%{?centos} -%global efidir centos -%endif - -ExcludeArch: s390 s390x +ExcludeArch: s390 s390x %{arm} Obsoletes: %{name} <= %{evr} %if 0%{with_legacy_arch} @@ -168,10 +164,10 @@ git commit -m "After making subdirs" %build %if 0%{with_efi_arch} -%{expand:%do_primary_efi_build %%{grubefiarch} %%{grubefiname} %%{grubeficdname} %%{_target_platform} %%{efi_target_cflags} %%{efi_host_cflags} %{SOURCE13} %{SOURCE14} centossecureboot001} +%{expand:%do_primary_efi_build %%{grubefiarch} %%{grubefiname} %%{grubeficdname} %%{_target_platform} %%{efi_target_cflags} %%{efi_host_cflags} %{SOURCE13} %{SOURCE14} redhatsecureboot301} %endif %if 0%{with_alt_efi_arch} -%{expand:%do_alt_efi_build %%{grubaltefiarch} %%{grubaltefiname} %%{grubalteficdname} %%{_alt_target_platform} %%{alt_efi_target_cflags} %%{alt_efi_host_cflags} %{SOURCE13} %{SOURCE14} centossecureboot001} +%{expand:%do_alt_efi_build %%{grubaltefiarch} %%{grubaltefiname} %%{grubalteficdname} %%{_alt_target_platform} %%{alt_efi_target_cflags} %%{alt_efi_host_cflags} %{SOURCE13} %{SOURCE14} redhatsecureboot301} %endif %if 0%{with_legacy_arch} %{expand:%do_legacy_build %%{grublegacyarch}} @@ -502,8 +498,9 @@ fi %endif %changelog -* Tue Jan 21 2020 CentOS Sources - 2.02-81.el8.centos -- Apply debranding changes +* Mon May 18 2020 Javier Martinez Canillas - 2.02-82.el8_2.1 +- Fix a segfault in grub2-editenv when attempting to shrink a variable + Resolves: rhbz#1836196 * Thu Dec 05 2019 Javier Martinez Canillas - 2.02-81 - Another fix for blscfg variable expansion support