A vulnerability was found in subscription-manager that allows local privilege escalation due to inadequate authorization. The D-Bus interface com.redhat.RHSM1 exposes a significant number of methods to all users that could change the state of the registration. By using the com.redhat.RHSM1.Config.SetAll() method, a low-privileged local user could tamper with the state of the registration, by unregistering the system or by changing the current entitlements. This flaw allows an attacker to set arbitrary configuration directives for /etc/rhsm/rhsm.conf, which can be abused to cause a local privilege escalation to an unconfined root.
A double-free was found in the way 389-ds-base handles virtual attributes context in persistent searches. An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash.
CVE-2023-0494/ZDI-CAN-19596: X.Org Server DeepCopyPointerClasses use-after-free
A dangling pointer in DeepCopyPointerClasses can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read/write into freed memory.
A flaw was found in systemd-journald. An out-of-bounds read when parsing a crafted syslog message that could lead to information disclosure.
The Samba vfsfruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfsfruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
FreeIPA supports the Kerberos PKINIT protocol extension (RFC 4556). PKINIT enables a client to authenticate to the KDC using an X.509 certificate and the corresonding private key, rather than a passphrase or keytab. FreeIPA uses mapping rules to map a certificate presented during a PKINIT authentication request to the corresponding principal. The mapping filter is vulnerable to LDAP filter injection. The search result can be influenced by values in the certificate, which may be attacker controlled. In the most extreme case, an attacker could gain control of the admin account, leading to full domain takeover.
FreeIPA is not vulnerable in its default configuration.
The problem is in libssscertmap, which is part of SSSD. FreeIPA servers use this library in ipakdb Kerberos plugin implementation.
The issue was introduced in SSSD 1.15.3 (when libssscertmap was introduced) and resolved in SSSD 2.3.1.
A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virtext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape.
A use-after-free vulnerability was found in a network namespaces code affecting the Linux kernel since v4.0-rc1 through v4.15-rc5. The function getnetnsbyid() does not check for the net::count value after it has found a peer network in netnsids idr which could lead to double free and memory corruption. This vulnerability could allow an unprivileged local user to induce kernel memory corruption on the system, leading to a crash. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.
References:
https://marc.info/?l=linux-netdev&m=151370451121029&w=2
https://marc.info/?t=151370468900001&r=1&w=2 (a whole thread)
http://seclists.org/oss-sec/2018/q1/7
An upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=21b5944350052d2583e82dd59b19a9ba94a007f0
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash.
The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used in Xen 4.5.x and earlier, allows remote attackers to read process heap memory via unspecified vectors.
A flaw was found in the way the ntp-keygen utility generated MD5 symmetric keys on big-endian systems. This could possibly allow an attacker to guess generated MD5 keys that could then be used to spoof an NTP client or server.
If the lowest byte of the temp variable is outside of the printable characters range (between 0x20 and 0x7f), the ntp-keygen utility enters an infinite loop. However, if the temp variable is within the aforementioned range, the generated MD5 key will consist of 20 identical characters, meaning only 93 possible keys can be generated.
Upstream bug:
https://bugs.ntp.org/showbug.cgi?id=2797
Upstream patch:
http://bk1.ntp.org/ntp-stable/?PAGE=patch&REV=55199296N2gFqH1Hm5GOnhrk9Ypygg
CVE request:
http://seclists.org/oss-sec/2015/q2/85
Due converting PIO to the new memory read/write api we no longer provide separate I/O region lenghts for read and write operations. As a result, reading from PIT Mode/Command register will end with accessing pit->channels with invalid index and potentially cause memory corruption and/or minor information leak.
A privileged guest user in a guest with QEMU PIT emulation enabled could potentially (tough unlikely) use this flaw to execute arbitrary code on the host with the privileges of the hosting QEMU process. (QEMU part of the vulnerability)
A privileged guest user in a guest could potentially (tough unlikely) use this flaw to execute arbitrary code on the host. (KVM part of the vulnerability)
Acknowledgements:
Red Hat would like to thank Matt Tait of Google's Project Zero security team for reporting this issue.
openjpeg: A heap-based buffer overflow flaw was found in the patch for CVE-2013-6045. A crafted j2k image could cause the application to crash, or potentially execute arbitrary code.
A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.
Important: pki-core security update
IBM Java SE version 8 includes the IBM Java Runtime Environment and the IBM Java Software Development Kit.<br>Security Fix(es):<br><li> IBM JDK: Object Request Broker (ORB) denial of service (CVE-2023-38264)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Flatpak is a system for building, distributing, and running sandboxed desktopapplications on Linux.Security Fix(es): flatpak: sandbox escape via RequestBackground portal (CVE-2024-32462) For more details about the security issue(s), including the impact, a CVSSscore, acknowledgments, and other related information, refer the CVE page(s)listed in the References section.
Important: linux-firmware security update
Important: firefox security update
Important: bind, bind-dyndb-ldap, and dhcp security update
Important: ipa security update
Important: less security update
389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.<br>Security Fix(es):<br><li> 389-ds-base: potential denial of service via specially crafted kerberos AS-REQ request (CVE-2024-3657)</li> <li> 389-ds-base: Malformed userPassword may cause crash at domodify in slapd/modify.c (CVE-2024-2199)</li> For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Important: glibc security update
Important: firefox security update
Important: tigervnc security update
Moderate: grub2 security update