CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
AI Score
Confidence
High
EPSS
Percentile
98.5%
The remote host is missing an update for the Debian
# 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("1.3.6.1.4.1.25623.1.0.703395");
script_cve_id("CVE-2015-2695", "CVE-2015-2696", "CVE-2015-2697");
script_tag(name:"creation_date", value:"2015-11-05 23:00:00 +0000 (Thu, 05 Nov 2015)");
script_version("2024-02-02T05:06:05+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:05 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"7.1");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:C");
script_name("Debian: Security Advisory (DSA-3395-2)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2015 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB7");
script_xref(name:"Advisory-ID", value:"DSA-3395-2");
script_xref(name:"URL", value:"https://www.debian.org/security/2015/DSA-3395-2");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/DSA-3395");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'krb5' package(s) announced via the DSA-3395-2 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Several vulnerabilities were discovered in krb5, the MIT implementation of Kerberos. The Common Vulnerabilities and Exposures project identifies the following problems:
CVE-2015-2695
It was discovered that applications which call gss_inquire_context() on a partially-established SPNEGO context can cause the GSS-API library to read from a pointer using the wrong type, leading to a process crash.
CVE-2015-2696
It was discovered that applications which call gss_inquire_context() on a partially-established IAKERB context can cause the GSS-API library to read from a pointer using the wrong type, leading to a process crash.
CVE-2015-2697
It was discovered that the build_principal_va() function incorrectly handles input strings. An authenticated attacker can take advantage of this flaw to cause a KDC to crash using a TGS request with a large realm field beginning with a null byte.
For the oldstable distribution (wheezy), these problems have been fixed in version 1.10.1+dfsg-5+deb7u4.
For the stable distribution (jessie), these problems have been fixed in version 1.12.1+dfsg-19+deb8u1.
For the testing distribution (stretch), these problems have been fixed in version 1.13.2+dfsg-3.
For the unstable distribution (sid), these problems have been fixed in version 1.13.2+dfsg-3.
We recommend that you upgrade your krb5 packages.");
script_tag(name:"affected", value:"'krb5' package(s) on Debian 7.");
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-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "DEB7") {
if(!isnull(res = isdpkgvuln(pkg:"krb5-admin-server", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-doc", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-gss-samples", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-kdc-ldap", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-locales", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-multidev", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-pkinit", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"krb5-user", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libgssapi-krb5-2", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libgssrpc4", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libk5crypto3", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkadm5clnt-mit8", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkadm5srv-mit8", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkdb5-6", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkrb5-3", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dbg", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkrb5-dev", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"libkrb5support0", ver:"1.10.1+dfsg-5+deb7u6", rls:"DEB7"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);