var-202002-1458
Vulnerability from variot

eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions. pppd (Point to Point Protocol Daemon) versions 2.4.2 through 2.4.8 are vulnerable to buffer overflow due to a flaw in Extensible Authentication Protocol (EAP) packet processing in eap_request and eap_response subroutines. PPP is the protocol used for establishing internet links over dial-up modems, DSL connections, and many other types of point-to-point links including Virtual Private Networks (VPN) such as Point to Point Tunneling Protocol (PPTP). The pppd software can also authenticate a network connected peer and/or supply authentication information to the peer using multiple authentication protocols including EAP. Due to a flaw in the Extensible Authentication Protocol (EAP) packet processing in the Point-to-Point Protocol Daemon (pppd), an unauthenticated remote attacker may be able to cause a stack buffer overflow, which may allow arbitrary code execution on the target system. This vulnerability is due to an error in validating the size of the input before copying the supplied data into memory. As the validation of the data size is incorrect, arbitrary data can be copied into memory and cause memory corruption possibly leading to execution of unwanted code.The vulnerability is in the logic of the eap parsing code, specifically in the eap_request() and eap_response() functions in eap.c that are called by a network input handler. These functions take a pointer and length as input using the the first byte as a type. If the type is EAPT_MD5CHAP(4), it looks at an embedded 1-byte length field. The logic in this code is intended to makes sure that embedded length is smaller than the whole packet length. After this verification, it tries to copy provided data (hostname) that is located after the embedded length field into a local stack buffer. This bounds check is incorrect and allows for memory copy to happen with an arbitrary length of data. An additional logic flaw causes the eap_input() function to not check if EAP has been negotiated during the Link Control Protocol (LCP) phase. This allows an unauthenticated attacker to send an EAP packet even if ppp refused the authentication negotiation due to lack of support for EAP or due to mismatch of an agreed pre-shared passphrase in the LCP phase. The vulnerable pppd code in eap_input will still process the EAP packet and trigger the stack buffer overflow. This unverified data with an unknown size can be used to corrupt memory of the target system. The pppd often runs with high privileges (system or root) and works in conjunction with kernel drivers. This makes it possible for an attacker to potentially execute arbitrary code with system or root level privileges.The pppd software is also adopted into lwIP (lightweight IP) project to provide pppd capabilities for small devices. The default installer and packages of lwIP are not vulnerable to this buffer overflow. However if you have used the lwIP source code and configured specifically to enable EAP at compile time, your software is likely vulnerable to the buffer overflow. The recommended update is available from Git repoistory http://git.savannah.nongnu.org/cgit/lwip.git.This type of weakness is commonly associated in Common Weakness Enumeration (CWE) with CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'). A Proof-of-Concept exploit for PPTP VPN Servers with additional tools are available in the by CERT/CC PoC repository. By sending an unsolicited EAP packet to a vulnerable ppp client or server, an unauthenticated remote attacker could cause memory corruption in the pppd process, which may allow for arbitrary code execution. ppp Exists in a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state.

For the oldstable distribution (stretch), this problem has been fixed in version 2.4.7-1+4+deb9u1.

For the stable distribution (buster), this problem has been fixed in version 2.4.7-2+4.1+deb10u1.

For the detailed security status of ppp please refer to its security tracker page at: https://security-tracker.debian.org/tracker/ppp

Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE-----

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===================================================================== Red Hat Security Advisory

Synopsis: Important: ppp security update Advisory ID: RHSA-2020:0630-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:0630 Issue date: 2020-02-27 CVE Names: CVE-2020-8597 =====================================================================

  1. Summary:

An update for ppp is now available for Red Hat Enterprise Linux 7.

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.

  1. Relevant releases/architectures:

Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

  1. Description:

The ppp packages contain the Point-to-Point Protocol (PPP) daemon and documentation for PPP support. The PPP protocol provides a method for transmitting datagrams over serial point-to-point links. PPP is usually used to dial in to an Internet Service Provider (ISP) or other organization over a modem and phone line.

Security Fix(es):

  • ppp: Buffer overflow in the eap_request and eap_response functions in eap.c (CVE-2020-8597)

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.

  1. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

  1. Package List:

Red Hat Enterprise Linux Client (v. 7):

Source: ppp-2.4.5-34.el7_7.src.rpm

x86_64: ppp-2.4.5-34.el7_7.x86_64.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux Client Optional (v. 7):

x86_64: ppp-debuginfo-2.4.5-34.el7_7.i686.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm ppp-devel-2.4.5-34.el7_7.i686.rpm ppp-devel-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode (v. 7):

Source: ppp-2.4.5-34.el7_7.src.rpm

x86_64: ppp-2.4.5-34.el7_7.x86_64.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

x86_64: ppp-debuginfo-2.4.5-34.el7_7.i686.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm ppp-devel-2.4.5-34.el7_7.i686.rpm ppp-devel-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source: ppp-2.4.5-34.el7_7.src.rpm

ppc64: ppp-2.4.5-34.el7_7.ppc64.rpm ppp-debuginfo-2.4.5-34.el7_7.ppc64.rpm

ppc64le: ppp-2.4.5-34.el7_7.ppc64le.rpm ppp-debuginfo-2.4.5-34.el7_7.ppc64le.rpm

s390x: ppp-2.4.5-34.el7_7.s390x.rpm ppp-debuginfo-2.4.5-34.el7_7.s390x.rpm

x86_64: ppp-2.4.5-34.el7_7.x86_64.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

ppc64: ppp-debuginfo-2.4.5-34.el7_7.ppc.rpm ppp-debuginfo-2.4.5-34.el7_7.ppc64.rpm ppp-devel-2.4.5-34.el7_7.ppc.rpm ppp-devel-2.4.5-34.el7_7.ppc64.rpm

ppc64le: ppp-debuginfo-2.4.5-34.el7_7.ppc64le.rpm ppp-devel-2.4.5-34.el7_7.ppc64le.rpm

s390x: ppp-debuginfo-2.4.5-34.el7_7.s390.rpm ppp-debuginfo-2.4.5-34.el7_7.s390x.rpm ppp-devel-2.4.5-34.el7_7.s390.rpm ppp-devel-2.4.5-34.el7_7.s390x.rpm

x86_64: ppp-debuginfo-2.4.5-34.el7_7.i686.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm ppp-devel-2.4.5-34.el7_7.i686.rpm ppp-devel-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source: ppp-2.4.5-34.el7_7.src.rpm

x86_64: ppp-2.4.5-34.el7_7.x86_64.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64: ppp-debuginfo-2.4.5-34.el7_7.i686.rpm ppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm ppp-devel-2.4.5-34.el7_7.i686.rpm ppp-devel-2.4.5-34.el7_7.x86_64.rpm

These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/

  1. References:

https://access.redhat.com/security/cve/CVE-2020-8597 https://access.redhat.com/security/updates/classification/#important

  1. Contact:

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/

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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================== Ubuntu Security Notice USN-4288-1 February 20, 2020

ppp vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 19.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary:

ppp could be made to crash or run programs if it received specially crafted network traffic.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10: ppp 2.4.7-2+4.1ubuntu4.1

Ubuntu 18.04 LTS: ppp 2.4.7-2+2ubuntu1.2

Ubuntu 16.04 LTS: ppp 2.4.7-1+2ubuntu1.16.04.2

In general, a standard system update will make all the necessary changes. 8) - aarch64, ppc64le, s390x, x86_64

3

Show details on source website

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    "data": "eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions. pppd (Point to Point Protocol Daemon) versions 2.4.2 through 2.4.8 are vulnerable to buffer overflow due to a flaw in Extensible Authentication Protocol (EAP) packet processing in eap_request and eap_response subroutines. PPP is the protocol used for establishing internet links over dial-up modems, DSL connections, and many other types of point-to-point links including Virtual Private Networks (VPN) such as Point to Point Tunneling Protocol (PPTP).  The pppd software can also authenticate a network connected peer and/or supply authentication information to the peer using multiple authentication protocols including EAP.  Due to a flaw in the Extensible Authentication Protocol (EAP) packet processing in the Point-to-Point Protocol Daemon (pppd), an unauthenticated remote attacker may be able to cause a stack buffer overflow, which may allow arbitrary code execution on the target system.  This vulnerability is due to an error in validating the size of the input before copying the supplied data into memory.  As the validation of the data size is incorrect, arbitrary data can be copied into memory and cause memory corruption possibly leading to execution of unwanted code.The vulnerability is in the logic of the eap parsing code, specifically in the eap_request() and eap_response() functions in eap.c that are called by a network input handler. These functions take a pointer and length as input using the the first byte as a type. If the type is EAPT_MD5CHAP(4), it looks at an embedded 1-byte length field. The logic in this code is intended to makes sure that embedded length is smaller than the whole packet length. After this verification, it tries to copy provided data (hostname) that is located after the embedded length field into a local stack buffer. This bounds check is incorrect and allows for memory copy to happen with an arbitrary length of data. An additional logic flaw causes the eap_input() function to not check if EAP has been negotiated during the Link Control Protocol (LCP) phase.  This allows an unauthenticated attacker to send an EAP packet even if ppp refused the authentication negotiation due to lack of support for EAP or due to mismatch of an agreed pre-shared passphrase in the LCP phase.  The vulnerable pppd code in eap_input will still process the EAP packet and trigger the stack buffer overflow.  This unverified data with an unknown size can be used to corrupt memory of the target system. The  pppd often runs with high privileges (system or root) and works in conjunction with kernel drivers.  This makes it possible for an attacker to potentially execute arbitrary code with system or root level privileges.The pppd software is also adopted into lwIP (lightweight IP) project to provide pppd capabilities for small devices.  The default installer and packages of lwIP are not vulnerable to this buffer overflow.  However if you have used the lwIP source code and configured specifically to enable EAP at compile time, your software is likely vulnerable to the buffer overflow. The recommended update is available from Git repoistory  http://git.savannah.nongnu.org/cgit/lwip.git.This type of weakness is commonly associated in Common Weakness Enumeration (CWE) with CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027).  A Proof-of-Concept exploit for PPTP VPN Servers with additional tools are available in the  by CERT/CC PoC repository. By sending an unsolicited EAP packet to a vulnerable ppp client or server, an unauthenticated remote attacker could cause memory corruption in the pppd process, which may allow for arbitrary code execution. ppp Exists in a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. \n\nFor the oldstable distribution (stretch), this problem has been fixed\nin version 2.4.7-1+4+deb9u1. \n\nFor the stable distribution (buster), this problem has been fixed in\nversion 2.4.7-2+4.1+deb10u1. \n\nFor the detailed security status of ppp please refer to its security\ntracker page at:\nhttps://security-tracker.debian.org/tracker/ppp\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n-----BEGIN PGP SIGNATURE-----\n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\neuFQYtUBSLJxB+ZK5DuFUbYQUXodIXHRaW3t/1ydru7W/3arZrI=\n=abUf\n-----END PGP SIGNATURE-----\n. 6) - i386, x86_64\n\n3. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n                   Red Hat Security Advisory\n\nSynopsis:          Important: ppp security update\nAdvisory ID:       RHSA-2020:0630-01\nProduct:           Red Hat Enterprise Linux\nAdvisory URL:      https://access.redhat.com/errata/RHSA-2020:0630\nIssue date:        2020-02-27\nCVE Names:         CVE-2020-8597 \n=====================================================================\n\n1. Summary:\n\nAn update for ppp is now available for Red Hat Enterprise Linux 7. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Client (v. 7) - x86_64\nRed Hat Enterprise Linux Client Optional (v. 7) - x86_64\nRed Hat Enterprise Linux ComputeNode (v. 7) - x86_64\nRed Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64\nRed Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Workstation (v. 7) - x86_64\nRed Hat Enterprise Linux Workstation Optional (v. 7) - x86_64\n\n3. Description:\n\nThe ppp packages contain the Point-to-Point Protocol (PPP) daemon and\ndocumentation for PPP support. The PPP protocol provides a method for\ntransmitting datagrams over serial point-to-point links. PPP is usually\nused to dial in to an Internet Service Provider (ISP) or other organization\nover a modem and phone line. \n\nSecurity Fix(es):\n\n* ppp: Buffer overflow in the eap_request and eap_response functions in\neap.c (CVE-2020-8597)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section. \n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\n5. Package List:\n\nRed Hat Enterprise Linux Client (v. 7):\n\nSource:\nppp-2.4.5-34.el7_7.src.rpm\n\nx86_64:\nppp-2.4.5-34.el7_7.x86_64.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux Client Optional (v. 7):\n\nx86_64:\nppp-debuginfo-2.4.5-34.el7_7.i686.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\nppp-devel-2.4.5-34.el7_7.i686.rpm\nppp-devel-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode (v. 7):\n\nSource:\nppp-2.4.5-34.el7_7.src.rpm\n\nx86_64:\nppp-2.4.5-34.el7_7.x86_64.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode Optional (v. 7):\n\nx86_64:\nppp-debuginfo-2.4.5-34.el7_7.i686.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\nppp-devel-2.4.5-34.el7_7.i686.rpm\nppp-devel-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux Server (v. 7):\n\nSource:\nppp-2.4.5-34.el7_7.src.rpm\n\nppc64:\nppp-2.4.5-34.el7_7.ppc64.rpm\nppp-debuginfo-2.4.5-34.el7_7.ppc64.rpm\n\nppc64le:\nppp-2.4.5-34.el7_7.ppc64le.rpm\nppp-debuginfo-2.4.5-34.el7_7.ppc64le.rpm\n\ns390x:\nppp-2.4.5-34.el7_7.s390x.rpm\nppp-debuginfo-2.4.5-34.el7_7.s390x.rpm\n\nx86_64:\nppp-2.4.5-34.el7_7.x86_64.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux Server Optional (v. 7):\n\nppc64:\nppp-debuginfo-2.4.5-34.el7_7.ppc.rpm\nppp-debuginfo-2.4.5-34.el7_7.ppc64.rpm\nppp-devel-2.4.5-34.el7_7.ppc.rpm\nppp-devel-2.4.5-34.el7_7.ppc64.rpm\n\nppc64le:\nppp-debuginfo-2.4.5-34.el7_7.ppc64le.rpm\nppp-devel-2.4.5-34.el7_7.ppc64le.rpm\n\ns390x:\nppp-debuginfo-2.4.5-34.el7_7.s390.rpm\nppp-debuginfo-2.4.5-34.el7_7.s390x.rpm\nppp-devel-2.4.5-34.el7_7.s390.rpm\nppp-devel-2.4.5-34.el7_7.s390x.rpm\n\nx86_64:\nppp-debuginfo-2.4.5-34.el7_7.i686.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\nppp-devel-2.4.5-34.el7_7.i686.rpm\nppp-devel-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nppp-2.4.5-34.el7_7.src.rpm\n\nx86_64:\nppp-2.4.5-34.el7_7.x86_64.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation Optional (v. 7):\n\nx86_64:\nppp-debuginfo-2.4.5-34.el7_7.i686.rpm\nppp-debuginfo-2.4.5-34.el7_7.x86_64.rpm\nppp-devel-2.4.5-34.el7_7.i686.rpm\nppp-devel-2.4.5-34.el7_7.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security.  Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2020-8597\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2020 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n\niQIVAwUBXlfen9zjgjWX9erEAQj4VxAAhoolIsxKBSxXvlTM4FIBi2+s77BlOiby\n1957YccCxFTvU0YP2LWqueepO/2Z9G/dBVGvej+JruD5Uc1qrIWyZNfnD9Y5CFw/\np1yTAKt0RM4XN9TeqXRn8ufYTMOU3hG1RIksbhKA1Wo8Xwf0BTj43BN9bv/7vHwj\n2GQEfp37ARKvBjrQDCKh5Yhe5vtLYHbC4NOkvZwt3pFc5Je001RFGwk5/sN2Vtiz\n91jazEJ9/duWvUn6O45vu1uTXRZnlPIQJmMtlD8+KbBVS4JK4oWoi9vyKM81y2AK\nJMlENiPstjEHOaIrdpd1nA1GWhPen4xNFMh1+4CGp7JfFPh8eUT59B8UDkBFdFzX\ntEyUqqb4xpNb+k2IMR50XZM9r5lGV8RQxex37EXOIyLzz4qSv6Anq/DcoP5cGbvu\niLAtSMJZz2BMJZ0a8+Cg6ynxbip1SqsgcmjbDRK/Ccf0CICvlj6apineUL9vtvBL\nTVEQnlqXO70uYLG3xTTLWiXqVradqATKzbUuPzvgME7aHGIRWyek4JvwCuetzR1/\nnyZts/ldBvmyob6KcUF7KejKUighqDwnoTmx6vWJlOT6DT3CZaS5tTvbZNd2kJk0\nnTmV6AD+yNcnI53FSh6WHPutUq3yDCQTEPojhgl13aDVXyzeAMmuzSOjFGG/+/GO\niXgkiSqdt/o=\n=Fzi6\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. ==========================================================================\nUbuntu Security Notice USN-4288-1\nFebruary 20, 2020\n\nppp vulnerability\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 19.10\n- Ubuntu 18.04 LTS\n- Ubuntu 16.04 LTS\n\nSummary:\n\nppp could be made to crash or run programs if it received specially crafted\nnetwork traffic. \n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 19.10:\n  ppp                             2.4.7-2+4.1ubuntu4.1\n\nUbuntu 18.04 LTS:\n  ppp                             2.4.7-2+2ubuntu1.2\n\nUbuntu 16.04 LTS:\n  ppp                             2.4.7-1+2ubuntu1.16.04.2\n\nIn general, a standard system update will make all the necessary changes. 8) - aarch64, ppc64le, s390x, x86_64\n\n3",
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