[DSA 4735-1] grub2 security update

2 files changed, 71 insertions, 0 deletions

diff --git a/english/security/2020/dsa-4735.data b/english/security/2020/dsa-4735.data
new file mode 100644
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--- /dev/null
+++ b/english/security/2020/dsa-4735.data
@@ -0,0 +1,13 @@
+<define-tag pagetitle>DSA-4735-1 grub2</define-tag>
+<define-tag report_date>2020-7-29</define-tag>
+<define-tag secrefs>CVE-2020-10713 CVE-2020-14308 CVE-2020-14309 CVE-2020-14310 CVE-2020-14311 CVE-2020-15706 CVE-2020-15707</define-tag>
+<define-tag packages>grub2</define-tag>
+<define-tag isvulnerable>yes</define-tag>
+<define-tag fixed>yes</define-tag>
+<define-tag fixed-section>no</define-tag>
+
+#use wml::debian::security
+
+
+
+</dl>
diff --git a/english/security/2020/dsa-4735.wml b/english/security/2020/dsa-4735.wml
new file mode 100644
index 00000000000..9b6ecf9c28b
--- /dev/null
+++ b/english/security/2020/dsa-4735.wml
@@ -0,0 +1,58 @@
+<define-tag description>security update</define-tag>
+<define-tag moreinfo>
+<p>Several vulnerabilities have been discovered in the GRUB2 bootloader.</p>
+
+<ul>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-10713">CVE-2020-10713</a>
+
+    <p>A flaw in the grub.cfg parsing code was found allowing to break
+    UEFI Secure Boot and load arbitrary code. Details can be found at
+    <a href="https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/">https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/</a></p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-14308">CVE-2020-14308</a>
+
+    <p>It was discovered that grub_malloc does not validate the allocation
+    size allowing for arithmetic overflow and subsequently a heap-based
+    buffer overflow.</p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-14309">CVE-2020-14309</a>
+
+    <p>An integer overflow in grub_squash_read_symlink may lead to a heap    based buffer overflow.</p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-14310">CVE-2020-14310</a>
+
+    <p>An integer overflow in read_section_from_string may lead to a heap    based buffer overflow.</p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-14311">CVE-2020-14311</a>
+
+    <p>An integer overflow in grub_ext2_read_link may lead to a heap-based
+    buffer overflow.</p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-15706">CVE-2020-15706</a>
+
+    <p>script: Avoid a use-after-free when redefining a function during
+    execution.</p></li>
+
+<li><a href="https://security-tracker.debian.org/tracker/CVE-2020-15707">CVE-2020-15707</a>
+
+    <p>An integer overflow flaw was found in the initrd size handling.</p>
+
+<p>Further detailed information can be found at
+<a href="https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot">https://www.debian.org/security/2020-GRUB-UEFI-SecureBoot</a></p></li>
+
+</ul>
+
+<p>For the stable distribution (buster), these problems have been fixed in
+version 2.02+dfsg1-20+deb10u1.</p>
+
+<p>We recommend that you upgrade your grub2 packages.</p>
+
+<p>For the detailed security status of grub2 please refer to its security
+tracker page at:
+<a href="https://security-tracker.debian.org/tracker/grub2">https://security-tracker.debian.org/tracker/grub2</a></p>
+</define-tag>
+
+# do not modify the following line
+#include "$(ENGLISHDIR)/security/2020/dsa-4735.data"
+# $Id: $