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CVE-2022-24793

Potential heap buffer overflow when parsing DNS packets in PJSIP

7.5 HighFix available

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.18%Up 1.3 points since Apr 9, 2022
90%50%10%1%

What each source reports

CVE List Score used 7.5

Potential heap buffer overflow when parsing DNS packets in PJSIP

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
EUVDEUVD-2022-29601 7.5

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
EUVD-2022-29601
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
NVD 7.5

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-120
Updated
2026-11-02
OSVALPINE-CVE-2022-24793 7.5

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
ALPINE-CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSV 7.5

Potential heap buffer overflow when parsing DNS packets in PJSIP

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-120
Updated
2026-11-02
OSVDEBIAN-CVE-2022-24793 7.5

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
DEBIAN-CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSVUBUNTU-CVE-2022-24793 7.5

PJSIP is a free and open source multimedia communication library written in C. A buffer overflow vulnerability in versions 2.12 and prior affects applications that use PJSIP DNS resolution. It doesn't affect PJSIP users who utilize an external resolver. This vulnerability is related to CVE-2023-27585. The difference is that this issue is in parsing the query record parse_rr(), while the issue in CVE-2023-27585 is in parse_query(). A patch is available in the master branch of the pjsip/pjproject GitHub repository. A workaround is to disable DNS resolution in PJSIP config (by setting nameserver_count to zero) or use an external resolver instead.

Record
UBUNTU-CVE-2022-24793
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUSN-6422-1 No score

ring vulnerabilities

It was discovered that Ring incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to execute arbitrary code. (CVE-2021-37706)

It was discovered that Ring incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-43299, CVE-2021-43300, CVE-2021-43301, CVE-2021-43302, CVE-2021-43303, CVE-2021-43804, CVE-2021-43845, CVE-2022-21723, CVE-2022-23537, CVE-2022-23547, CVE-2022-23608, CVE-2022-24754, CVE-2022-24763, CVE-2022-24764, CVE-2022-24793, CVE-2022-31031, CVE-2022-39244)

It was discovered that Ring incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2022-21722)

It was discovered that Ring incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service. (CVE-2023-27585)

Record
USN-6422-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
pjproject
Alpine:v3.16
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.17
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.18
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.19
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.20
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.21
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.22
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.23
before 2.12.1-r0
2.12.1-r0
pjproject
Alpine:v3.24
before 2.12.1-r0
2.12.1-r0
asterisk
Debian:14
before 1:18.14.0~~rc1~dfsg+~cs6.12.40431414-1, plus listed versions
0.1.11-30.1.11-3woody11:1.0.5-21:1.0.5-41:1.0.6-1
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1:1.0.6-21:1.0.7-11:1.0.7.dfsg.1-11:1.0.7.dfsg.1-21:1.0.7.dfsg.1-2sarge11:1.0.7.dfsg.1-2sarge21:1.0.7.dfsg.1-2sarge31:1.0.7.dfsg.1-2sarge41:1.0.7.dfsg.1-2sarge51:1.0.7.dfsg.1-2sarge61:1.0.9.dfsg-11:1.0.9.dfsg-31:1.0.9.dfsg-41:1.0.9.dfsg-51:1.0.9.dfsg-61:1.2.0-beta1.dfsg-11:1.2.0-beta2.dfsg-11:1.2.0-beta2.dfsg-21:1.2.0-beta2.dfsg-31:1.2.0-rc1.dfsg-11:1.2.0-rc2.dfsg-11:1.2.0.dfsg-11:1.2.0.dfsg-21:1.2.0.dfsg-31:1.2.0.dfsg-41:1.2.0.dfsg-51:1.2.0.dfsg-61:1.2.1.dfsg-11:1.2.1.dfsg-21:1.2.1.dfsg-31:1.2.10.dfsg-11:1.2.10.dfsg-1bpo11:1.2.10.dfsg-21:1.2.10.dfsg-31:1.2.11.dfsg-11:1.2.12.1.dfsg-11:1.2.13~dfsg-11:1.2.13~dfsg-21:1.2.13~dfsg-2etch11:1.2.13~dfsg-2etch21:1.2.13~dfsg-2etch31:1.2.13~dfsg-2etch41:1.2.14~dfsg-11:1.2.14~dfsg-21:1.2.14~dfsg-3
1:18.14.0~~rc1~dfsg+~cs6.12.40431414-1
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Affected packages
PackageAffectedFixed
ring
Debian:12
before 20230206.0~ds1-1
20230206.0~ds1-1
pjproject
Debian:9
From an advisory covering 3 CVEs
before 2.5.5~dfsg-6+deb9u5, plus listed versions
2.5.5~dfsg-62.5.5~dfsg-6+deb9u12.5.5~dfsg-6+deb9u22.5.5~dfsg-6+deb9u32.5.5~dfsg-6+deb9u4
2.5.5~dfsg-6+deb9u5
asterisk
Debian:10
From an advisory covering 20 CVEs
before 1:16.28.0~dfsg-0+deb10u1, plus listed versions
1:16.10.0~dfsg-11:16.12.0~dfsg-11:16.15.0~dfsg-11:16.15.1~dfsg-11:16.16.1~dfsg+~2.10-1
Show 14 moreShow less
1:16.16.1~dfsg+~2.10-21:16.16.1~dfsg-11:16.16.1~dfsg-1~bpo10+11:16.16.1~dfsg-21:16.16.1~dfsg-31:16.16.1~dfsg-41:16.2.1~dfsg-11:16.2.1~dfsg-1+deb10u11:16.2.1~dfsg-1+deb10u21:16.2.1~dfsg-21:16.23.0~dfsg+~2.10-11:16.23.0~dfsg+~cs6.10.20220309-11:16.23.0~dfsg+~cs6.10.20220309-21:16.23.0~dfsg+~cs6.10.40431411-1
1:16.28.0~dfsg-0+deb10u1
ring
Debian:10
From an advisory covering 20 CVEs
before 20190215.1.f152c98~ds1-1+deb10u2, plus listed versions
20190215.1.f152c98~ds1-120190215.1.f152c98~ds1-1+deb10u1
20190215.1.f152c98~ds1-1+deb10u2
ring
Debian:11
From an advisory covering 21 CVEs
before 20210112.2.b757bac~ds1-1+deb11u1, plus listed versions
20210112.2.b757bac~ds1-1
20210112.2.b757bac~ds1-1+deb11u1
asterisk
Debian:11
From an advisory covering 20 CVEs
before 1:16.28.0~dfsg-0+deb11u1, plus listed versions
1:16.16.1~dfsg+~2.10-11:16.16.1~dfsg+~2.10-21:16.16.1~dfsg-11:16.16.1~dfsg-1+deb11u11:16.16.1~dfsg-1+deb11u1~bpo10+1
Show 7 moreShow less
1:16.16.1~dfsg-21:16.16.1~dfsg-31:16.16.1~dfsg-41:16.23.0~dfsg+~2.10-11:16.23.0~dfsg+~cs6.10.20220309-11:16.23.0~dfsg+~cs6.10.20220309-21:16.23.0~dfsg+~cs6.10.40431411-1
1:16.28.0~dfsg-0+deb11u1
pjproject
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
2.1.0.0.ast20130823-12.1.0.0.ast20130823-1+deb8u1build0.16.04.12.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1
None known
pjproject
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
2.6~dfsg-22.7~dfsg-12.7.1~dfsg-12.7.1~dfsg-1build12.7.2~dfsg-12.7.2~dfsg-1ubuntu0.1~esm1
None known
ring
Ubuntu:Pro:18.04:LTS
before 20180228.1.503da2b~ds1-1ubuntu0.1~esm1, plus listed versions
20170803.2.5fcfe3f~dfsg1-120171024.1.eadbdeb~ds1-120171129.2.cf5bbff~ds1-120171129.2.cf5bbff~ds1-220180119.1.9e06f94~ds1-1
Show 4 moreShow less
20180119.1.9e06f94~ds1-320180222.1.7bffde2~ds2-220180228.1.503da2b~ds1-120180228.1.503da2b~ds1-1build1
20180228.1.503da2b~ds1-1ubuntu0.1~esm1
ring
Ubuntu:20.04:LTS
before 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1, plus listed versions
20190215.1.f152c98~ds1-120190215.1.f152c98~ds1-1build120190215.1.f152c98~ds1-1build2
20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1
ring
Ubuntu:Pro:18.04:LTS
From an advisory covering 20 CVEs
before 20180228.1.503da2b~ds1-1ubuntu0.1~esm1, plus listed versions
20170803.2.5fcfe3f~dfsg1-120171024.1.eadbdeb~ds1-120171129.2.cf5bbff~ds1-120171129.2.cf5bbff~ds1-220180119.1.9e06f94~ds1-1
Show 4 moreShow less
20180119.1.9e06f94~ds1-320180222.1.7bffde2~ds2-220180228.1.503da2b~ds1-120180228.1.503da2b~ds1-1build1
20180228.1.503da2b~ds1-1ubuntu0.1~esm1
ring
Ubuntu:20.04:LTS
From an advisory covering 20 CVEs
before 20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1, plus listed versions
20190215.1.f152c98~ds1-120190215.1.f152c98~ds1-1build120190215.1.f152c98~ds1-1build2
20190215.1.f152c98~ds1-1+deb10u2build0.20.04.1

History

History
RecordedChangedSources
affected, factsOSV
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-24793 is a high vulnerability (CVSS 7.5) in Pjsip Pjproject, published April 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.18%, the 82nd percentile. Fixed in pjproject 2.12.1-r0.

References

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Left out here: 204 versions. The JSON record has them.

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