repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last schema whose length is less than the length of the input schema.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0076 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2019-20387     repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema.

    CVE-2021-33928:
    Buffer overflow vulnerability in function pool_installable in src/repo.h in libsolv before 0.7.17 allows     attackers to cause a Denial of Service.

    CVE-2021-33929:
    Buffer overflow vulnerability in function pool_disabled_solvable in src/repo.h in libsolv before 0.7.17     allows attackers to cause a Denial of Service.

    CVE-2021-33930:
    Buffer overflow vulnerability in function pool_installable_whatprovides in src/repo.h in libsolv before     0.7.17 allows attackers to cause a Denial of Service.

    CVE-2021-33938:
    Buffer overflow vulnerability in function prune_to_recommended in src/policy.c in libsolv before 0.7.17     allows attackers to cause a Denial of Service.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema. (CVE-2019-20387)

Note that Nessus relies on the presence of the package as reported by the vendor.

An update of the libsolv package has been released.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2020:4508 advisory.

  - repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema. (CVE-2019-20387)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED12 / SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2180-1 advisory.

  - repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema. (CVE-2019-20387)

  - Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp,     const char *testcase, Queue *job, char **resultp, int *resultflagsp function at src/testcase.c: line 2334,     which could cause a denial of service (CVE-2021-3200)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2145-1 advisory.

  - repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema. (CVE-2019-20387)

  - Buffer overflow vulnerability in libsolv 2020-12-13 via the Solver * testcase_read(Pool *pool, FILE *fp,     const char *testcase, Queue *job, char **resultp, int *resultflagsp function at src/testcase.c: line 2334,     which could cause a denial of service (CVE-2021-3200)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote NewStart CGSL host, running version MAIN 6.02, has libsolv packages installed that are affected by a vulnerability:

  - repodata_schema2id in repodata.c in libsolv before 0.7.6 has a heap-based buffer over-read via a last     schema whose length is less than the length of the input schema. (CVE-2019-20387)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2020:4508 advisory.

  - libsolv: out-of-bounds read in repodata_schema2id in repodata.c (CVE-2019-20387)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2020-4508 advisory.

    [0.7.11-1]
    - Update to 0.7.11
    - selected bug fixes:
      * support arch<->noarch package changes when creating patch         conflicts from the updateinfo data
      * also support other rpm database types
      * fixed solv_zchunk decoding error if large chunks are used
      * treat retracted pathes as irrelevant
      * made add_update_target work with multiversion installs
    - new features
      * support for SOLVER_BLACKLIST jobs that block the installation of matched         packages unless they are directly selected by an SOLVER_INSTALL job
      * libsolv now also parses the patch status in the updateinfo parser
      * new solvable_matchessolvable() function
      * support conda constrains dependencies
      * new rpm_stat_database() function
      * new rpm_hash_database_state() function

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:4508 advisory.

    The libsolv packages provide a library for resolving package dependencies using a satisfiability     algorithm.

    The following packages have been upgraded to a later upstream version: libsolv (0.7.11). (BZ#1809106)

    Security Fix(es):

    * libsolv: out-of-bounds read in repodata_schema2id in repodata.c (CVE-2019-20387)

    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.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

repodata_schema2id in repodata.c in libsolv, a dependency solver library, had a heap-based buffer over-read via a last schema whose length could be less than the length of the input schema.

For Debian 8 'Jessie', this problem has been fixed in version 0.6.5-1+deb8u1.

We recommend that you upgrade your libsolv packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
236468	Alibaba Cloud Linux 3 : 0076: libsolv (ALINUX3-SA-2021:0076)	Nessus	Alibaba Cloud Linux Local Security Checks	high
222820	Linux Distros Unpatched Vulnerability : CVE-2019-20387	Nessus	Misc.	high
202768	Photon OS 2.0: Libsolv PHSA-2020-2.0-0205	Nessus	PhotonOS Local Security Checks	high
157671	AlmaLinux 8 : libsolv (ALSA-2020:4508)	Nessus	Alma Linux Local Security Checks	high
151124	SUSE SLED12 / SLES12 Security Update : libsolv (SUSE-SU-2021:2180-1)	Nessus	SuSE Local Security Checks	high
151093	SUSE SLES12 Security Update : libsolv (SUSE-SU-2021:2145-1)	Nessus	SuSE Local Security Checks	high
147383	NewStart CGSL MAIN 6.02 : libsolv Vulnerability (NS-SA-2021-0060)	Nessus	NewStart CGSL Local Security Checks	high
145877	CentOS 8 : libsolv (CESA-2020:4508)	Nessus	CentOS Local Security Checks	high
142812	Oracle Linux 8 : libsolv (ELSA-2020-4508)	Nessus	Oracle Linux Local Security Checks	high
142433	RHEL 8 : libsolv (RHSA-2020:4508)	Nessus	Red Hat Local Security Checks	high
133807	Photon OS 3.0: Libsolv PHSA-2020-3.0-0057	Nessus	PhotonOS Local Security Checks	high
133364	Debian DLA-2088-1 : libsolv security update	Nessus	Debian Local Security Checks	high

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CVE-2019-20387

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