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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1557 Important: Red Hat Container Development Kit 3.0.0 security update 22 June 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Red Hat Container Development Kit 3.0.0 Publisher: Red Hat Operating System: Red Hat Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Increased Privileges -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-1000366 CVE-2017-1000364 CVE-2017-7502 Reference: ESB-2017.1404 ESB-2017.1368 ESB-2017.1367 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:1567 - --------------------------BEGIN INCLUDED TEXT-------------------- ===================================================================== Red Hat Security Advisory Synopsis: Important: Red Hat Container Development Kit 3.0.0 security update Advisory ID: RHSA-2017:1567-01 Product: Container Development Kit Advisory URL: https://access.redhat.com/errata/RHSA-2017:1567 Issue date: 2017-06-21 CVE Names: CVE-2017-1000364 CVE-2017-1000366 CVE-2017-7502 ===================================================================== 1. Summary: An update is now available for Red Hat Container Development Kit 3.0.0. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Description: Red Hat Container Development Kit is a platform for developing containerized applications it is a set of tools that enables developers to quickly and easily set up an environment for developing and testing containerized applications on the Red Hat Enterprise Linux platform. With this update, Container Development Kit has been updated to 3.0.0-2, which includes an updated Red Hat Enterprise Linux ISO that contains fixes for the following security issues. Security Fix(es): * A null pointer dereference flaw was found in the way NSS handled empty SSLv2 messages. An attacker could use this flaw to crash a server application compiled against the NSS library. (CVE-2017-7502) * A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult. (CVE-2017-1000364) * A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is glibc-side mitigation which blocks processing of LD_LIBRARY_PATH for programs running in secure-execution mode and reduces the number of allocations performed by the processing of LD_AUDIT, LD_PRELOAD, and LD_HWCAP_MASK, making successful exploitation of this issue more difficult. (CVE-2017-1000366) Red Hat would like to thank Qualys Research Labs for reporting CVE-2017-1000364 and CVE-2017-1000366. 3. Solution: The References section of this erratum contains a link to download CDK 3.0.0-2 (you must log in to download the update). 4. Bugs fixed (https://bugzilla.redhat.com/): 1446631 - CVE-2017-7502 nss: Null pointer dereference when handling empty SSLv2 messages 1452543 - CVE-2017-1000366 glibc: heap/stack gap jumping via unbounded stack allocations 1461333 - CVE-2017-1000364 kernel: heap/stack gap jumping via unbounded stack allocations 5. References: https://access.redhat.com/security/cve/CVE-2017-1000364 https://access.redhat.com/security/cve/CVE-2017-1000366 https://access.redhat.com/security/cve/CVE-2017-7502 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/downloads/content/293/ 6. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWUsIr4x+lLeg9Ub1AQgbYA//VqRHLWLb8164n7hWoJgy0ZNZwRbweFY2 Vs1y+zclw2/i8BJApDAsCp0NpWp6vUtxVnmrUkAvOoOWfrcsVsTc5nH+HOjO9e66 PNmloinFfWlfhfrSjAJJi8RJ7YBW0o0mjFcs64a3IzJG1qb8+MdQBmR3AHPj5oAX HPr1V//cOKPgYnmRmkWcPTxdpxw7mBsvDGFfmm8vI9XSqIKWzjpvLV1OnDQ6pzsZ Xqfq1Houkq8PjwGCr1ku2yYKKSEtfGG3u12DphdU+KxMHvpUeWdDceQhiGqRuw1v Im/AdP4oe4LuKC/kSrtXIPID+GDh7BU4DLiDGYV6BRJuvGAEcUzupCRx6p1nZxpX QM/+704zfVcs7kyNYhn9ptQVbN/Or++MbyyTLdnG/cpiNq3lW653wqlIFwkJANJ2 PgEUiLvxJP1Do4X1VItPe/+0s50y3A3WRQdXHz/yOg4LrWg8ka75hIZ2xDsWm46R ng9XPFnNjHKDlsCLCtCCN8Z9Uv03GSFfFKtmR1ppne+kcBsmRppOHI0v3KAjoSh2 SW7M3fnTtCFJXFuEoepBixTPKht6o0CazyzwXLdv9I2ddseyYFWw3uoSzvuq9++h zxTh4KxlK4uPclRhRxuNekCaFay+EF376lKkgFKOhX+r0R535z4wTfie0eK3rjAp 1eN2MYYq9GY= =EHRv -----END PGP SIGNATURE-----