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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3837 libxstream-java security update 11 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libxstream-java Publisher: Debian Operating System: Debian GNU/Linux Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Modify Arbitrary Files -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2021-39154 CVE-2021-39153 CVE-2021-39152 CVE-2021-39151 CVE-2021-39150 CVE-2021-39149 CVE-2021-39148 CVE-2021-39147 CVE-2021-39146 CVE-2021-39145 CVE-2021-39144 CVE-2021-39141 CVE-2021-39140 CVE-2021-39139 CVE-2021-29505 CVE-2021-21351 CVE-2021-21350 CVE-2021-21349 CVE-2021-21348 CVE-2021-21347 CVE-2021-21346 CVE-2021-21345 CVE-2021-21344 CVE-2021-21343 CVE-2021-21342 CVE-2021-21341 Reference: ASB-2021.0216 ASB-2021.0212 Original Bulletin: http://www.debian.org/security/2021/dsa-5004 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - - ------------------------------------------------------------------------- Debian Security Advisory DSA-5004-1 security@debian.org https://www.debian.org/security/ Markus Koschany November 10, 2021 https://www.debian.org/security/faq - - ------------------------------------------------------------------------- Package : libxstream-java CVE ID : CVE-2021-39139 CVE-2021-39140 CVE-2021-39141 CVE-2021-39144 CVE-2021-39145 CVE-2021-39146 CVE-2021-39147 CVE-2021-39148 CVE-2021-39149 CVE-2021-39150 CVE-2021-39151 CVE-2021-39152 CVE-2021-39153 CVE-2021-39154 CVE-2021-21341 CVE-2021-21342 CVE-2021-21343 CVE-2021-21344 CVE-2021-21345 CVE-2021-21346 CVE-2021-21347 CVE-2021-21348 CVE-2021-21349 CVE-2021-21350 CVE-2021-21351 CVE-2021-29505 Multiple security vulnerabilities have been discovered in XStream, a Java library to serialize objects to XML and back again. These vulnerabilities may allow a remote attacker to load and execute arbitrary code from a remote host only by manipulating the processed input stream. XStream itself sets up a whitelist by default now, i.e. it blocks all classes except those types it has explicit converters for. It used to have a blacklist by default, i.e. it tried to block all currently known critical classes of the Java runtime. Main reason for the blacklist were compatibility, it allowed to use newer versions of XStream as drop-in replacement. However, this approach has failed. A growing list of security reports has proven, that a blacklist is inherently unsafe, apart from the fact that types of 3rd libraries were not even considered. A blacklist scenario should be avoided in general, because it provides a false sense of security. For the oldstable distribution (buster), these problems have been fixed in version 1.4.11.1-1+deb10u3. For the stable distribution (bullseye), these problems have been fixed in version 1.4.15-3+deb11u1. We recommend that you upgrade your libxstream-java packages. For the detailed security status of libxstream-java please refer to its security tracker page at: https://security-tracker.debian.org/tracker/libxstream-java 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----- iQKTBAEBCgB9FiEErPPQiO8y7e9qGoNf2a0UuVE7UeQFAmGMKzxfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEFD RjNEMDg4RUYzMkVERUY2QTFBODM1RkQ5QUQxNEI5NTEzQjUxRTQACgkQ2a0UuVE7 UeR/IhAAqA5YC4n3hjvylquoUwqx09C1HG5YXUPe2FZJqCsRxhbYxt77FkJveAEY L2G2HJsloJFJPaISRX/05WzHv0CIuzSLBakHqqJrgbQMWWGGFdyEwG2x3kxquWGt BWP14wbMK44fdBsh2jC1S1UPcIamsQoZgm4bXtmaVe/CKLU62tKsTJ/l4rNXNPW7 npfDAoyd8ulYWwv9ERyg1NyHtcGRp/MueqYsDixFamrXl2IqsICGJQ1zEtjSQ+19 ysNwkJnAPQ10TxRIIDMSm2Xgr1+BkV7gbi6QAVvACAuNuuKwMTL1AAlujbO+aMBr GT/kMHNk8hAowuln073yeL/p9PYvMPgSnBCLdyTa+UaW8/NMJ/cwkHLlXgMphdl1 odKSB4dRcgy1LfeIvq5fpBhm+ZgH7tqXb2a3sMNrrwd086sPD1nUN/IxMpk3hY7h a5d1pgIJz/lSEwrme3BGv3wNP0bp//GeGb/ZLccuiH6Byz0X2BH5t1jfIyuFbK3i I1T6eeEsWyjJQghZjSIsT0Kwra9qLNHGIoqu6p+zszAiR9xnMuyRaHhIs7+wQL1E mgNpGZYioXLwM9uMUvokf4np47I8NVW4md1LjZ3rZvgITsnnP+o40Zrqv4cSVvVA ENSlan16C9qpgTEWP12u3eJrYn2FfnGjjUWF8kCKvRgrEgOUP2g= =m4T7 - -----END PGP SIGNATURE----- - --------------------------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: https://www.auscert.org.au/bulletins/ =========================================================================== 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). 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