CVE-2015-5309
published 2015-12-07CVE-2015-5309: Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute…
PriorityP428medium4.3CVSS 2.0
AVNACMAuNCNINAP
EPSS
3.47%
87.7th percentile
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | putty | < putty 0.66-1 (bookworm) | putty 0.66-1 (bookworm) |
| opensuse | leap | — | — |
| opensuse | opensuse | — | — |
| opensuse | opensuse | — | — |
| putty | putty | >= 0 < 0.66-1 | 0.66-1 |
| putty | putty | >= 0 < 0.66-1 | 0.66-1 |
| putty | putty | >= 0 < 0.66-1 | 0.66-1 |
| putty | putty | >= 0 < 0.66-1 | 0.66-1 |
| simon_tatham | putty | <= 0.65 | — |
CVSS provenance
nvdv2.04.3MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P
osv4.3MEDIUM
vendor_debian4.3MEDIUM
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Debian
CVE-2015-5309: putty - Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote att...
vendor_debian·2015·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309: putty - Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote att...
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
Scope: local
bookworm: resolved (fixed in 0.66-1)
bullseye: resolved (fixed in 0.66-1)
forky: resolved (fixed in 0.66-1)
sid: resolved (fixed in 0.66-1)
trixie: resolved (fixed in 0.66-1)
GHSA
GHSA-xf6h-8pvx-cg8q: Integer overflow in the terminal emulator in PuTTY before 0
ghsa_unreviewed·2022-05-14
CVE-2015-5309 [MEDIUM] GHSA-xf6h-8pvx-cg8q: Integer overflow in the terminal emulator in PuTTY before 0
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
OSV
CVE-2015-5309: Integer overflow in the terminal emulator in PuTTY before 0
osv·2015-12-07·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309: Integer overflow in the terminal emulator in PuTTY before 0
Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-5]
bugzilla·2015-11-09·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-5]
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-5]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
epel-5 tracking bug for pu
Bugzilla
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [fedora-all]
bugzilla·2015-11-09·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [fedora-all]
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects mu
Bugzilla
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-6]
bugzilla·2015-11-09·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-6]
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling [epel-6]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of Fedora EPEL.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
epel-6 tracking bug for pu
Bugzilla
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling
bugzilla·2015-11-09·CVSS 4.3
CVE-2015-5309 [MEDIUM] CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling
CVE-2015-5309 putty: Integer overflow and buffer underrun in terminal emulator's ECH handling
A potentially memory-corrupting integer overflow in the handling of ECH (erase characters) control sequence in the terminal emulator was found in putty versions between 0.54 and 0.65. To exploit a vulnerability in the terminal emulator, an attacker must be able to insert a carefully crafted escape sequence into the terminal stream. For a PuTTY SSH session, this must be before encryption, so the attacker likely needs access to the server the victim is connecting to. For instance, an attacker on a multi-user machine that you connect to could trick victim into running cat on a file they control containing a malicious escape sequence.
The vulnerability arises because PuTTY uses signed integer variabl
http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.htmlhttp://lists.opensuse.org/opensuse-updates/2015-11/msg00099.htmlhttp://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.htmlhttp://www.debian.org/security/2015/dsa-3409http://www.securitytracker.com/id/1034308https://security.gentoo.org/glsa/201606-01http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.htmlhttp://lists.opensuse.org/opensuse-updates/2015-11/msg00099.htmlhttp://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.htmlhttp://www.debian.org/security/2015/dsa-3409http://www.securitytracker.com/id/1034308https://security.gentoo.org/glsa/201606-01
2015-12-07
Published