Fixing HPKP with Certificate Constraints

This is the third post in my series on HPKP. In my first post I declared HPKP dead, and in my second post I explored the possibility of fixing it by introducing pin revocation. Today I will consider an entirely different approach to make HPKP much safer, by changing how it’s activated. In my...

CVE-2017-12616

When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or view the source code of JSPs for resources served by the VirtualDirContext using a specially crafted request...

Choose Your Own Infosec Adventure

I often reflect on how difficult choices in our industry can be. Do we invest more in prevention, detection or response? Do we automate or add more staff? Do we use a managed service or keep it in house? These represent some of the strategic decisions defenders are faced with on a yearly basis...

tomcat: Security constrained bypass in error page mechanism

A vulnerability was discovered in the error page mechanism in Tomcat's DefaultServlet implementation. A crafted HTTP request could cause undesired side effects, possibly including the removal or replacement of the custom error page...

CVE-2017-12149

It was found that the doFilter method in the ReadOnlyAccessFilter of the HTTP Invoker does not restrict classes for which it performs deserialization. This allows an attacker to execute arbitrary code via crafted serialized data. Mitigation Secure the access to the entire http-invoker contexts by...

Apache Tomcat 8.5.0 < 8.5.16 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 8.5.16. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat8.5.16security-8 advisory. - The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M21 and 8.5.0 to 8.5.15 bypassed a number...

SUSE-SU-2017:2175-1 Security update for java-1_8_0-openjdk

This java-180-openjdk update to version jdk8u141 icedtea 3.5.0 fixes the following issues: Security issues fixed: - CVE-2017-10053: Improved image post-processing steps bsc1049305 - CVE-2017-10067: Additional jar validation steps bsc1049306 - CVE-2017-10074: Image conversion improvements bsc10493...

CVE-2017-7675

The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.0.M21 and 8.5.0 to 8.5.15 bypassed a number of security checks that prevented directory traversal attacks. It was therefore possible to bypass security constraints using a specially crafted URL...

pidgin: SSL/TLS plug-ins failed to check Basic Constraints

It was found that Pidgin's SSL/TLS plug-ins had a flaw in the certificate validation functionality. An attacker could use this flaw to create a fake certificate, that Pidgin would trust, which could be used to conduct man-in-the-middle attacks against Pidgin...

Russia Bans Proxy Services And VPNs To Purge Extremist Content

Earlier this year, China announced a crackdown on VPNs and proxy services in the country and made it mandatory for all VPN providers and leased cable lines operators to have a license from the government in order to use such services. Now, Russia is also considering to follow a similar path. The...

Amazon Linux AMI : java-1.8.0-openjdk (ALAS-2017-860)

Incorrect enforcement of certificate path restrictions : It was discovered that the Security component of OpenJDK could fail to properly enforce restrictions defined for processing of X.509 certificate chains. A remote attacker could possibly use this flaw to make Java accept certificate using on...

UBUNTU-CVE-2016-6127

Cross-site scripting XSS vulnerability in Request Tracker RT 4.x before 4.0.25, 4.2.x before 4.2.14, and 4.4.x before 4.4.2, when the AlwaysDownloadAttachments config setting is not in use, allows remote attackers to inject arbitrary web script or HTML via a file upload with an unspecified conten...

CVE-2017-6030

A Predictable Value Range from Previous Values issue was discovered in Schneider Electric Modicon PLCs Modicon M221, firmware versions prior to Version 1.5.0.0, Modicon M241, firmware versions prior to Version 4.0.5.11, and Modicon M251, firmware versions prior to Version 4.0.5.11. The affected...

Fixed in Apache Tomcat 8.5.16

Important: Security Constraint Bypass CVE-2017-7675 The HTTP/2 implementation bypassed a number of security checks that prevented directory traversal attacks. It was therefore possible to bypass security constraints using an specially crafted URL. This was fixed in revision 1796091. The issue was...

Security update for Mozilla based packages (important)

This update for Mozilla Firefox, Thunderbird, and NSS fixes the following issues: Mozilla Firefox was updated to 52.2esr boo1043960 MFSA 2017-16: CVE-2017-5472 bmo1365602 Use-after-free using destroyed node when regenerating trees CVE-2017-7749 bmo1355039 Use-after-free during docshell reloading...

Privilege Escalation

keycloak-spring-boot-adapter is susceptible to privilege escalation attacks. It is due to a flaw in the loop of KeycloakSpringBootConfiguration.java, granting admin access to normal user instead of using the security constraints as intended when Tomcat is used for Spring...

Surveillance Intermediaries

Interesting law-journal article: "Surveillance Intermediaries," by Alan Z. Rozenshtein. Abstract:Apple's 2016 fight against a court order commanding it to help the FBI unlock the iPhone of one of the San Bernardino terrorists exemplifies how central the question of regulating government...

Oracle Linux 6 : nss (ELSA-2017-1364)

The remote Oracle Linux 6 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2017-1364 advisory. 3.28.4-3.0.1 - Added nss-vendor.patch to change vendor - Temporarily disable some tests until expired PayPalEE.cert is renewed 3.28.4-3 - Fix zero-length record...

nss security and bug fix update

3.28.4-3.0.1 - Added nss-vendor.patch to change vendor - Temporarily disable some tests until expired PayPalEE.cert is renewed 3.28.4-3 - Fix zero-length record treatment for stream ciphers and SSLv2 3.28.4-2 - Include CKBI 2.14 and updated CA constraints from NSS 3.28.5...

Command injection

A vulnerability in the web interface for Cisco Prime Collaboration Provisioning could allow an unauthenticated, remote attacker to bypass authentication and perform command injection with root privileges. The vulnerability is due to missing security constraints in certain HTTP request methods,...