Amazon Linux: Security Advisory (ALAS-2015-556)

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.120039");
  script_cve_id("CVE-2015-3165", "CVE-2015-3166", "CVE-2015-3167");
  script_tag(name:"creation_date", value:"2015-09-08 11:15:54 +0000 (Tue, 08 Sep 2015)");
  script_version("2025-01-23T05:37:38+0000");
  script_tag(name:"last_modification", value:"2025-01-23 05:37:38 +0000 (Thu, 23 Jan 2025)");
  script_tag(name:"cvss_base", value:"7.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-11-22 15:08:00 +0000 (Fri, 22 Nov 2019)");

  script_name("Amazon Linux: Security Advisory (ALAS-2015-556)");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_family("Amazon Linux Local Security Checks");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("ssh/login/amazon_linux", "ssh/login/release");

  script_xref(name:"Advisory-ID", value:"ALAS-2015-556");
  script_xref(name:"URL", value:"https://alas.aws.amazon.com/ALAS-2015-556.html");

  script_tag(name:"summary", value:"The remote host is missing an update for the 'postgresql8' package(s) announced via the ALAS-2015-556 advisory.");

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

  script_tag(name:"insight", value:"A double-free flaw was found in the connection handling. An unauthenticated attacker could exploit this flaw to crash the PostgreSQL back end by disconnecting at approximately the same time as the authentication time out is triggered. (CVE-2015-3165)

It was discovered that PostgreSQL did not properly check the return values of certain standard library functions. If the system is in a state that would cause the standard library functions to fail, for example memory exhaustion, an authenticated user could exploit this flaw to disclose partial memory contents or cause the GSSAPI authentication to use an incorrect keytab file. (CVE-2015-3166)

It was discovered that the pgcrypto module could return different error messages when decrypting certain data with an incorrect key. This can help an authenticated user to launch a possible cryptographic attack, although no suitable attack is currently known. (CVE-2015-3167)");

  script_tag(name:"affected", value:"'postgresql8' package(s) on Amazon Linux.");

  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 == "AMAZON") {

  if(!isnull(res = isrpmvuln(pkg:"postgresql8", rpm:"postgresql8~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-contrib", rpm:"postgresql8-contrib~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-debuginfo", rpm:"postgresql8-debuginfo~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-devel", rpm:"postgresql8-devel~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-docs", rpm:"postgresql8-docs~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-libs", rpm:"postgresql8-libs~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-plperl", rpm:"postgresql8-plperl~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-plpython", rpm:"postgresql8-plpython~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-pltcl", rpm:"postgresql8-pltcl~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-server", rpm:"postgresql8-server~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

  if(!isnull(res = isrpmvuln(pkg:"postgresql8-test", rpm:"postgresql8-test~8.4.20~3.50.amzn1", rls:"AMAZON"))) {
    report += res;
  }

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

exit(0);