SUSE: Security Advisory (SUSE-SU-2021:0693-1)

# SPDX-FileCopyrightText: 2021 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.1.4.2021.0693.1");
  script_cve_id("CVE-2020-36221", "CVE-2020-36222", "CVE-2020-36223", "CVE-2020-36224", "CVE-2020-36225", "CVE-2020-36226", "CVE-2020-36227", "CVE-2020-36228", "CVE-2020-36229", "CVE-2020-36230", "CVE-2021-27212");
  script_tag(name:"creation_date", value:"2021-04-19 00:00:00 +0000 (Mon, 19 Apr 2021)");
  script_version("2025-08-15T15:42:25+0000");
  script_tag(name:"last_modification", value:"2025-08-15 15:42:25 +0000 (Fri, 15 Aug 2025)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2021-02-22 21:21:49 +0000 (Mon, 22 Feb 2021)");

  script_name("SUSE: Security Advisory (SUSE-SU-2021:0693-1)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("SuSE Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/suse_sles", "ssh/login/rpms", re:"ssh/login/release=(SLES12\.0SP2|SLES12\.0SP3|SLES12\.0SP4|SLES12\.0SP5)");

  script_xref(name:"Advisory-ID", value:"SUSE-SU-2021:0693-1");
  script_xref(name:"URL", value:"https://www.suse.com/support/update/announcement/2021/suse-su-20210693-1.html");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182279");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182408");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182411");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182412");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182413");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182415");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182416");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182417");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182418");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182419");
  script_xref(name:"URL", value:"https://bugzilla.suse.com/1182420");
  script_xref(name:"URL", value:"https://lists.suse.com/pipermail/sle-security-updates/2021-March/008428.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'openldap2' package(s) announced via the SUSE-SU-2021:0693-1 advisory.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");

  script_tag(name:"insight", value:"This update for openldap2 fixes the following issues:

- bsc#1182408 CVE-2020-36230 - an assertion failure in slapd in the
 X.509 DN parsing in decode.c ber_next_element, resulting in denial
 of service.
- bsc#1182411 CVE-2020-36229 - ldap_X509dn2bv crash in the X.509 DN
 parsing in ad_keystring, resulting in denial of service.
- bsc#1182412 CVE-2020-36228 - integer underflow leading to crash
 in the Certificate List Exact Assertion processing, resulting in
 denial of service.
- bsc#1182413 CVE-2020-36227 - infinite loop in slapd with the
 cancel_extop Cancel operation, resulting in denial of service.
- bsc#1182416 CVE-2020-36225 - double free and slapd crash in the
 saslAuthzTo processing, resulting in denial of service.
- bsc#1182417 CVE-2020-36224 - invalid pointer free and slapd crash
 in the saslAuthzTo processing, resulting in denial of service.
- bsc#1182415 CVE-2020-36226 - memch->bv_len miscalculation and slapd
 crash in the saslAuthzTo processing, resulting in denial of service.
- bsc#1182419 CVE-2020-36222 - assertion failure in slapd in the
 saslAuthzTo validation, resulting in denial of service.
- bsc#1182420 CVE-2020-36221 - slapd crashes in the Certificate Exact
 Assertion processing, resulting in denial of service (schema_init.c
 serialNumberAndIssuerCheck).
- bsc#1182418 CVE-2020-36223 - slapd crash in the Values Return Filter
 control handling, resulting in denial of service (double free and
 out-of-bounds read).
- bsc#1182279 CVE-2021-27212 - an assertion failure in slapd can occur
 in the issuerAndThisUpdateCheck function via a crafted packet,
 resulting in a denial of service (daemon exit) via a short timestamp.
 This is related to schema_init.c and checkTime.");

  script_tag(name:"affected", value:"'openldap2' package(s) on SUSE Linux Enterprise Server 12-SP2, SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server for SAP Applications 12-SP2, SUSE Linux Enterprise Server for SAP Applications 12-SP3, SUSE Linux Enterprise Server for SAP Applications 12-SP4, SUSE Linux Enterprise Server for SAP Applications 12-SP5.");

  script_tag(name:"solution", value:"Please install the updated package(s).");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"package");

  exit(0);
}

include("revisions-lib.inc");
include("pkg-lib-rpm.inc");

release = rpm_get_ssh_release();
if(!release)
  exit(0);

res = "";
report = "";

if(release == "SLES12.0SP2") {

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2", rpm:"libldap-2_4-2~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2-32bit", rpm:"libldap-2_4-2-32bit~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2", rpm:"openldap2~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-back-meta", rpm:"openldap2-back-meta~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-client", rpm:"openldap2-client~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-doc", rpm:"openldap2-doc~2.4.41~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-ppolicy-check-password", rpm:"openldap2-ppolicy-check-password~1.2~18.83.1", rls:"SLES12.0SP2"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "SLES12.0SP3") {

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2", rpm:"libldap-2_4-2~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2-32bit", rpm:"libldap-2_4-2-32bit~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2", rpm:"openldap2~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-back-meta", rpm:"openldap2-back-meta~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-client", rpm:"openldap2-client~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-doc", rpm:"openldap2-doc~2.4.41~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-ppolicy-check-password", rpm:"openldap2-ppolicy-check-password~1.2~18.83.1", rls:"SLES12.0SP3"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "SLES12.0SP4") {

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2", rpm:"libldap-2_4-2~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2-32bit", rpm:"libldap-2_4-2-32bit~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2", rpm:"openldap2~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-back-meta", rpm:"openldap2-back-meta~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-client", rpm:"openldap2-client~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-doc", rpm:"openldap2-doc~2.4.41~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-ppolicy-check-password", rpm:"openldap2-ppolicy-check-password~1.2~18.83.1", rls:"SLES12.0SP4"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

if(release == "SLES12.0SP5") {

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2", rpm:"libldap-2_4-2~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"libldap-2_4-2-32bit", rpm:"libldap-2_4-2-32bit~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2", rpm:"openldap2~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-back-meta", rpm:"openldap2-back-meta~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-client", rpm:"openldap2-client~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-doc", rpm:"openldap2-doc~2.4.41~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"openldap2-ppolicy-check-password", rpm:"openldap2-ppolicy-check-password~1.2~18.83.1", rls:"SLES12.0SP5"))) {
    report += res;
  }

  if(report != "") {
    security_message(data:report);
  } else if(__pkg_match) {
    exit(99);
  }
  exit(0);
}

exit(0);