package/openldap: add upstream security fix for CVE-2021-27212

PATCH New Peter Korsgaard 2 participants 3 messages Feb 26, 2021 – Mar 9, 2021

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Peter Korsgaard

author

2021-02-26 23:13 UTC #0 lore raw

PATCH 1/1 package/openldap: add upstream security fix for CVE-2021-27212

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.

For more details, see the bugtracker:
https://bugs.openldap.org/show_bug.cgi?id=9454

Signed-off-by Peter Korsgaard <[email protected]>

---
 ...TS-9454-fix-issuerAndThisUpdateCheck.patch | 26 +++++++++++++++++++
 package/openldap/openldap.mk                  |  3 +++
 2 files changed, 29 insertions(+)
 create mode 100644 package/openldap/0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch

package/openldap/0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch new file +26 -0

new file mode 100644
index 0000000000..a611b9ff59
@@ -0,0 +1,26 @@
+From 9badb73425a67768c09bcaed1a9c26c684af6c30 Mon Sep 17 00:00:00 2001
+From: Howard Chu <[email protected]>
+Date: Sat, 6 Feb 2021 20:52:06 +0000
+Subject: [PATCH] ITS#9454 fix issuerAndThisUpdateCheck
+
+Signed-off-by: Peter Korsgaard <[email protected]>
+---
+ servers/slapd/schema_init.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/servers/slapd/schema_init.c b/servers/slapd/schema_init.c
+index 31be1154e..8b1e25539 100644
+--- a/servers/slapd/schema_init.c
++++ b/servers/slapd/schema_init.c
+@@ -3900,6 +3900,8 @@ issuerAndThisUpdateCheck(
+ 					break;
+ 				}
+ 			}
++			if ( tu->bv_len < STRLENOF("YYYYmmddHHmmssZ") ) return LDAP_INVALID_SYNTAX;
++
+ 			x.bv_val += tu->bv_len + 1;
+ 			x.bv_len -= tu->bv_len + 1;
+ 
+-- 
+2.20.1
+

package/openldap/openldap.mk +3 -0

index b4c06d8640..ec11e4fa7d 100644
@@ -13,6 +13,9 @@ OPENLDAP_CPE_ID_VENDOR = openldap
 OPENLDAP_INSTALL_STAGING = YES
 OPENLDAP_DEPENDENCIES = host-pkgconf
 
+# 0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch
+OPENLDAP_IGNORE_CVES += CVE-2021-27212
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 OPENLDAP_TLS = openssl
 OPENLDAP_DEPENDENCIES += openssl

Signature · 1 line

2.20.1

Yann E. MORIN

Applied

2021-02-27 08:20 UTC #1 lore raw

PATCH 1/1 package/openldap: add upstream security fix for CVE-2021-27212

Peter, All,

On 2021-02-27 00:13 +0100, Peter Korsgaard spake thusly:

Quoted 9 lines

In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.
For more details, see the bugtracker:
https://bugs.openldap.org/show_bug.cgi?id=9454
Signed-off-by Peter Korsgaard <[email protected]>

Applied to master, thanks.

Regards,
Yann E. MORIN.

Quoted 59 lines

---
 ...TS-9454-fix-issuerAndThisUpdateCheck.patch | 26 +++++++++++++++++++
 package/openldap/openldap.mk                  |  3 +++
 2 files changed, 29 insertions(+)
 create mode 100644 package/openldap/0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch

package/openldap/0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch new file +26 -0

new file mode 100644
index 0000000000..a611b9ff59
@@ -0,0 +1,26 @@
+From 9badb73425a67768c09bcaed1a9c26c684af6c30 Mon Sep 17 00:00:00 2001
+From: Howard Chu <[email protected]>
+Date: Sat, 6 Feb 2021 20:52:06 +0000
+Subject: [PATCH] ITS#9454 fix issuerAndThisUpdateCheck
+
+Signed-off-by: Peter Korsgaard <[email protected]>
+---
+ servers/slapd/schema_init.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/servers/slapd/schema_init.c b/servers/slapd/schema_init.c
+index 31be1154e..8b1e25539 100644
+--- a/servers/slapd/schema_init.c
++++ b/servers/slapd/schema_init.c
+@@ -3900,6 +3900,8 @@ issuerAndThisUpdateCheck(
+ 					break;
+ 				}
+ 			}
++			if ( tu->bv_len < STRLENOF("YYYYmmddHHmmssZ") ) return LDAP_INVALID_SYNTAX;
++
+ 			x.bv_val += tu->bv_len + 1;
+ 			x.bv_len -= tu->bv_len + 1;
+ 
+-- 
+2.20.1
+

package/openldap/openldap.mk +3 -0

index b4c06d8640..ec11e4fa7d 100644
@@ -13,6 +13,9 @@ OPENLDAP_CPE_ID_VENDOR = openldap
 OPENLDAP_INSTALL_STAGING = YES
 OPENLDAP_DEPENDENCIES = host-pkgconf
 
+# 0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch
+OPENLDAP_IGNORE_CVES += CVE-2021-27212
+
 ifeq ($(BR2_PACKAGE_OPENSSL),y)
 OPENLDAP_TLS = openssl
 OPENLDAP_DEPENDENCIES += openssl

Signature · 6 lines

2.20.1

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Signature · 6 lines

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|  Yann E. MORIN  | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
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Peter Korsgaard

author

2021-03-09 23:00 UTC #2 lore raw

PATCH 1/1 package/openldap: add upstream security fix for CVE-2021-27212

In reply to Peter Korsgaard

Quoted 11 lines

Quoted 1 line
Quoted 1 line
Quoted 1 line
Quoted 1 line
"Peter" == Peter Korsgaard <[email protected]> writes:
In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion failure in slapd can occur in the issuerAndThisUpdateCheck function via a crafted packet, resulting in a denial of service (daemon exit) via a short timestamp. This is related to schema_init.c and checkTime.
For more details, see the bugtracker:
https://bugs.openldap.org/show_bug.cgi?id=9454
Signed-off-by Peter Korsgaard <[email protected]>

Committed to 2020.02.x and 2020.11.x, thanks.

Signature · 1 line

Bye, Peter Korsgaard