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    Linux Security

    ArchLinux: 202011-22: ceph: multiple issues

    Date 05 Dec 2020
    310
    Posted By LinuxSecurity Advisories
    The package ceph before version 15.2.6-1 is vulnerable to multiple issues including authentication bypass, content spoofing, cross-site scripting and private key recovery.
    Arch Linux Security Advisory ASA-202011-22
    ==========================================
    
    Severity: High
    Date    : 2020-11-26
    CVE-ID  : CVE-2020-1759 CVE-2020-1760 CVE-2020-10753 CVE-2020-25660
    Package : ceph
    Type    : multiple issues
    Remote  : Yes
    Link    : https://security.archlinux.org/AVG-1195
    
    Summary
    =======
    
    The package ceph before version 15.2.6-1 is vulnerable to multiple
    issues including authentication bypass, content spoofing, cross-site
    scripting and private key recovery.
    
    Resolution
    ==========
    
    Upgrade to 15.2.6-1.
    
    # pacman -Syu "ceph>=15.2.6-1"
    
    The problems have been fixed upstream in version 15.2.6.
    
    Workaround
    ==========
    
    None.
    
    Description
    ===========
    
    - CVE-2020-1759 (private key recovery)
    
    A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat
    Openshift Container Storage 4.2, where a nonce reuse vulnerability was
    discovered in the secure mode of the messenger v2 protocol, which can
    allow an attacker to forge auth tags and potentially manipulate the
    data by leveraging the reuse of a nonce in a session. Messages
    encrypted using a reused nonce value are susceptible to serious
    confidentiality and integrity attacks.
    
    - CVE-2020-1760 (cross-site scripting)
    
    A flaw was found in the Ceph Object Gateway, where it supports request
    sent by an anonymous user in Amazon S3. This flaw could lead to
    potential XSS attacks due to the lack of proper neutralization of
    untrusted input. If the attacker knows the path to a publicly readable
    object on any RGW cluster and the object is at least large enough to
    cover the attack body then it is possible to run an XSS on any object.
    
    - CVE-2020-10753 (content spoofing)
    
    A flaw was found in the Ceph Storage RadosGW (Ceph Object Gateway). The
    vulnerability is related to the injection of HTTP headers via a CORS
    ExposeHeader tag. The newline character in the ExposeHeader tag in the
    CORS configuration file generates a header injection in the response
    when the CORS request is made. This issue affects the RadosGW S3 API,
    it does not affect the Swift API.
    
    - CVE-2020-25660 (authentication bypass)
    
    A flaw was found in the Cephx authentication protocol in versions
    before 15.2.6 and before 14.2.14, where it does not verify Ceph clients
    correctly and is then vulnerable to replay attacks in Nautilus. This
    flaw allows an attacker with access to the Ceph cluster network to
    authenticate with the Ceph service via a packet sniffer and perform
    actions allowed by the Ceph service. This issue is a reintroduction of
    CVE-2018-1128, affecting the msgr2 protocol. The msgr2 protocol is used
    for all communication except older clients that do not support the
    msgr2 protocol. The msgr1 protocol is not affected. The highest threat
    from this vulnerability is to confidentiality, integrity, and system
    availability.
    
    Impact
    ======
    
    An attacker might be able to decrypt and force Ceph messages, bypass
    CORS and exploit XSS to trick a user into performing an unwanted
    action.
    
    References
    ==========
    
    https://bugs.archlinux.org/task/67047
    https://docs.ceph.com/en/latest/releases/octopus/#v15-2-1-octopus
    https://docs.ceph.com/en/latest/releases/nautilus/#v14-2-9-nautilus
    https://www.openwall.com/lists/oss-security/2020/04/07/2
    https://github.com/ceph/ceph/pull/34482
    https://github.com/ceph/ceph/commit/47c7e623546a7a33bd6bbddfb899fa9c9a40f40a
    https://github.com/ceph/ceph/commit/f6c5ad8a5f534d73cba9c6bd794a89e879c46ecc
    https://www.openwall.com/lists/oss-security/2020/04/07/1
    https://github.com/ceph/ceph/commit/fce0b267446d6f3f631bb4680ebc3527bbbea002
    https://github.com/ceph/ceph/commit/87a63d1743ec6428b43cc5a5977fa5e90f50b7ed
    https://github.com/ceph/ceph/commit/c7da604cb101cbe78a257a29498a98c69964e0a6
    https://docs.ceph.com/en/latest/releases/nautilus/#v14-2-10-nautilus
    https://docs.ceph.com/en/latest/releases/octopus/#v15-2-4-octopus
    https://github.com/ceph/ceph/pull/35773
    https://github.com/ceph/ceph/commit/ea0a33719e1765a79eb0c7137262b8e93cd073e3
    https://ceph.io/community/v15-2-6-octopus-released/
    https://ceph.io/releases/v14-2-14-nautilus-released/
    https://github.com/ceph/ceph/commit/4a82c72e3bdddcb625933e83af8b50a444b961f1
    https://github.com/ceph/ceph/commit/6f5c4152ca2c6423e665cde2196c6301f76043a2
    https://github.com/ceph/ceph/commit/949e2e595eda553aa68f697cee1dcfff3c09cf3f
    https://security.archlinux.org/CVE-2020-1759
    https://security.archlinux.org/CVE-2020-1760
    https://security.archlinux.org/CVE-2020-10753
    https://security.archlinux.org/CVE-2020-25660
    

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